DSP SwitcherTM Power Modules 88MG815/88MG816, 1A Rated Output Current 88MG830/88MG831, 2A Rated Output Current Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Preliminary Specifications, Patent Pending Doc. No. MV-S101948-00, Rev. D February 21, 2006 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Document Status Advance Information This document contains design specifications for initial product development. Specifications may change without notice. Contact Marvell Field Application Engineers for more information. Preliminary Information This document contains preliminary data, and a revision of this document will be published at a later date. Specifications may change without notice. Contact Marvell Field Application Engineers for more information. Final Information This document contains specifications on a product that is in final release. Specifications may change without notice. Contact Marvell Field Application Engineers for more information. Revision Code: Rev. D Preliminary Technical Publication: 2.0 No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Marvell. Marvell retains the right to make changes to this document at any time, without notice. Marvell makes no warranty of any kind, expressed or implied, with regard to any information contained in this document, including, but not limited to, the implied warranties of merchantability or fitness for any particular purpose. Further, Marvell does not warrant the accuracy or completeness of the information, text, graphics, or other items contained within this document. 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At all times hereunder, the recipient of any such information agrees that they shall be deemed to have manually signed this document in connection with their receipt of any such information. Copyright (c) . Marvell International Ltd. All rights reserved. Marvell, the Marvell logo, Moving Forward Faster, Alaska, Fastwriter, Datacom Systems on Silicon, Libertas, Link Street, NetGX, PHYAdvantage, Prestera, Raising The Technology Bar, The Technology Within, Virtual Cable Tester, and Yukon are registered trademarks of Marvell. Ants, AnyVoltage, Discovery, DSP Switcher, Feroceon, GalNet, GalTis, Horizon, Marvell Makes It All Possible, RADLAN, UniMAC, and VCT are trademarks of Marvell. All other trademarks are the property of their respective owners. Doc. No. MV-S101948-00 Rev. D Page 2 Copyright@ 2005 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions SIP Package F EATURES /B ENEFITS * * DIP Package (TBD) * * * * * * * * * * * * * * * SMT Package True lead- free "plug-n-play" solution No external components required - except a single voltage programming resistor Tiny footprint, vertical and horizontal options Input voltage range: 3V to 5.5V Programmable output voltage: 0.72V to 3.63V 2% output voltage tolerance 1 MHz switching frequency 95% efficiency--no heatsink required 2.5V and 3.3V LDO Secondary Voltage Versions Ultra-fast transient response Low output ripple and noise AnyVoltageTM Technology provides 64 output selections and shortens design cycles Output voltage margining capability for easy system testing and qualification High reliability - lowest component count Works with any external capacitive load (low ESR, high ESR) Built-in undervoltage lockout, thermal protection, and current limit Control IC and passive kit components are available for high volume user Copyright@ 2005 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 3 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions O VERVIEW A PPLICATIONS The 88MG815/88MG816/88MG830/88MG831 is a high-performance, non-isolated, DC-DC converter module for point-of-load (POL) applications. It functions as a synchronous step-down (buck) switching regulator in a small form factor. The module includes a proprietary Marvell(R) integrated regulator device. The switching frequency for the regulator is 1 MHz, and no external components are required (except one voltage programming resistor, see Section 2.1 "Output Voltage - AnyVoltageTM Technology" on page 14). * * * * * * * * Point-of-load power supplies Networking/Datacom systems Portable computing Workstation and Servers DSP power supplies LAN/WAN Enterprise Networks Industrial Controls Ultra-high conversion efficiency (typically 95%) allows for the use of the 88MG815/88MG816/88MG830/ 88MG831 without any heatsink. Additionally, the 88MG815/88MG816/88MG830/88MG831 includes an innovative single resistor method1 to program the output voltage. This voltage is defined by the user with an external resistor. The 88MG815/88MG816/88MG830/88MG831 operates from an input voltage range of 3V to 5.5V, making the device well suited for portable applications. The output voltage range is 0.72V to 3.63V, supporting future devices down to 65 nm geometries. Other key features include an internal current limit, an undervoltage lockout, a thermal shutdown, and an ambient temperature range of -40C to 85C 1. Patent Pending Doc. No. MV-S100649-00, Rev A Page 4 Copyright@ 2005 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary D EVICE F EATURE D IFFERENCES Table below summarizes the feature differences between 88MG815/88MG816/88MG830/88MG831. Fe atur es 88MG815 z-x 88 MG816 -x 88 MG830 z-x 88 MG83 1-x Rated Output Current 1.0A 1.0A 2.0A 2.0A Packages * * * ("-x" package code options -S ->SIP -D ->DIP -T ->SMT) LDO "z" voltage option P RODUCT 8-Pin SIP 7-Pin DIP 7-Pin SMT B = 3.3V E = 2.5V * * * 7-Pin SIP 6-Pin DIP 6-Pin SMT No LDO * * * * * * 8-Pin SIP 7-Pin DIP 7-Pin SMT B = 3.3V E = 2.5V 7-Pin SIP 6-Pin DIP 6-Pin SMT No LDO SELECTOR TABLE Part Number Desc ription LD O Ou tpu t Vol tage Rate d O ut pu t Current 1 Pa cka ge 88MG815B-S SIP Module: 1A Rated Output Switching Reg. with LDO 3.3V 1.0A 9-pin SIP 88MG815E-S SIP Module: 1A Rated Output Switching Reg. with LDO 2.5V 1.0A 9-pin SIP 88MG815B-D DIP Module: 1A Rated Output Switching Reg. with LDO 3.3V 1.0A 7-pin DIP 88MG815E-D DIP Module: 1A Rated Output Switching Reg. with LDO 2.5V 1.0A 7-pin DIP 88MG815B-T SMT Module: 1A Rated Output Switching Reg. with LDO 3.3V 1.0A 7-pin SMT 88MG815E-T SMT Module: 1A Rated Output Switching Reg. with LDO 2.5V 1.0A 7-pin SMT 88MG816-S SIP Module: 1A Rated Output Switching Reg. -- 1.0A 8-pin SIP 88MG816-D DIP Module: 1A Rated Output Switching Reg. -- 1.0A 6-pin DIP 88MG816-T SMT Module: 1A Rated Output Switching Reg. -- 1.0A 6-pin SMT 88MG830B-S SIP Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 9-pin SIP 88MG830E-S SIP Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 9-pin SIP 88MG830B-D DIP Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 7-pin DIP 88MG830E-D DIP Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 7-pin DIP 88MG830B-T SMT Module: 2A Rated Output Switching Reg. with LDO 3.3V 2.0A 7-pin SMT 88MG830E-T SMT Module: 2A Rated Output Switching Reg. with LDO 2.5V 2.0A 7-pin SMT 88MG831-S SIP Module: 2A Rated Output Switching Reg. -- 2.0A 8-pin SIP 88MG831-D DIP Module: 2A Rated Output Switching Reg. -- 2.0A 6-pin DIP 88MG831-T SMT Module: 2A Rated Output Switching Reg. -- 2.0A 6-pin SMT 1. The maximum continuous output current while maintaining output voltage regulation is determined by thermal constraints. Refer to the Output Current Temperature Derating Curves. Copyright@ 2005 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 5 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Table of Contents SECTION 1. SIGNAL DESCRIPTION ................................................................. 10 1.1 Pin Diagram for 88MG815z & 88MG830z ....................................................................10 1.2 Pin Diagram for 88MG816 & 88MG831........................................................................11 1.3 Pin Description .............................................................................................................12 1.4 Pin Assignment Table ..................................................................................................13 SECTION 2. FUNCTIONAL DESCRIPTION ......................................................... 14 2.1 Output Voltage - AnyVoltageTM Technology ..............................................................14 2.2 Output Voltage Margining............................................................................................16 2.3 LDO Versions................................................................................................................17 2.3.1 LDO Output Voltage ......................................................................................................... 17 2.4 Regulation and Start-up...............................................................................................18 2.5 Digital Soft Start ...........................................................................................................18 2.6 Undervoltage Lockout (UVLO) ....................................................................................19 2.7 Thermal Shutdown .......................................................................................................19 SECTION 3. ELECTRICAL SPECIFICATIONS ..................................................... 20 3.1 Absolute Maximum Ratings ........................................................................................20 3.2 Recommended Operating Conditions .......................................................................20 3.3 Electrical Characteristics.............................................................................................21 SECTION 4. 4.1 4.2 FUNCTIONAL CHARACTERISTICS ................................................. 24 Startup Waveforms.......................................................................................................24 Load Transient Response Waveforms .......................................................................27 4.2.1 4.2.2 88MG830 Step-Down Regulator ...................................................................................... 27 LDO Regulator.................................................................................................................. 28 4.3 Switching Waveforms ..................................................................................................29 4.4 Efficiency.......................................................................................................................30 4.5 Considerations for Bench Testing and Hot Plug Applications ................................31 4.5.1 Hot Plug Solution.............................................................................................................. 31 Doc. No. MV-S101948-00, Rev. D Page 6 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary 4.5.2 Hot Plug Protection for bench testing and Wall Wart Applications ................................... 31 SECTION 5. MECHANICAL DRAWINGS ............................................................32 5.1 Mechanical Dimensions for 88MG815z & 88MG830z................................................ 32 5.2 Mechanical Dimensions for 88MG816 & 88MG831 ................................................... 35 SECTION 6. ORDERING INFORMATION ............................................................38 6.1 Ordering Part Numbers and Package Markings ....................................................... 38 6.2 Sample Ordering Part Number ................................................................................... 39 6.3 Package Marking.......................................................................................................... 40 6.3.1 88MG815z Package Marking ........................................................................................... 40 Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 7 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions List of Tables Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9: Table 10: Any Voltage Programming Table for 5% Resistors ............................................................................. 14 AnyVoltageTM Programming Table for 1% Resistors........................................................................... 15 Absolute Maximum Ratings .................................................................................................................. 20 Recommended Operating Conditions .................................................................................................. 20 Electrical Characteristics ...................................................................................................................... 21 88MG815/88MG816, 1A Rated Output Current Electrical Characteristics ........................................... 22 88MG830/88MG831, 2A Rated Output Current Electrical Characteristics ........................................... 22 LDO Output Electrical Characteristics .................................................................................................. 23 Ordering Part Numbers ........................................................................................................................ 39 Marking Specification Table ................................................................................................................. 41 Doc. No. MV-S101948-00 Rev. D Page 8 Copyright@ 2005 Document Classification: Proprietary Information February 21, 2006, Preliminary List of Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: 88MG815z & 88MG830z Package - Component View....................................................................... 10 Connection Block Configuration Sample for 88MG815z & 88MG830z .............................................. 10 88MG816 & 88MG831 Package - Component View .......................................................................... 11 Connection Block Configuration Sample for 88MG816 & 88MG831 .................................................. 11 Output Voltage Margining for 88MG815z & 88MG830z ..................................................................... 16 Output Voltage Margining for 88MG816 & 88MG831......................................................................... 17 Output Voltage Window ...................................................................................................................... 18 88MG815z & 88MG830z SIP Series Mechanical Dimensions ........................................................... 32 88MG815z & 88MG830z DIP Series Mechanical Dimensions ........................................................... 33 88MG815z & 88MG830z SMT Series Mechanical Dimensions ......................................................... 34 88MG816 & 88MG831 SIP Series Mechanical Dimensions............................................................... 35 88MG816 & 88MG831 DIP Series Mechanical Dimensions............................................................... 36 88MG816 & 88MG831 SMT Series Mechanical Dimensions ............................................................. 37 88MG815z & 88MG830z Part Number............................................................................................... 38 88MG816 & 88MG831 Part Number .................................................................................................. 38 88MG815z Package Marking ............................................................................................................. 40 Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00 Rev. D Document Classification: Proprietary Information Page 9 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 1. Signal Description 1.1 Pin Diagram for 88MG815z & 88MG830z Figure 1: 88MG815z & 88MG830z Package - Component View SHDN 8 5 88MG815 z-D 88MG830 z- D 88MG815 z-T 88MG830 z- T 9 SHDN 7 VIN 6 GND 5 VOUT 4 MISSING PIN VSET 3 GND PSET LDO_OUT 2 6 7 88MG815z-S 88MG830 z-S 1 PSET VSET 1 2 3 LDO_ OUT VOUT 4 GND VIN Figure 2: Connection Block Configuration Sample for 88MG815z & 88MG830z VIN SHDN GND VOUT VSET GND PSET Opti onal LDO_OUT 88MG 815 z-S 88 MG 830 z-S Load 3V-5.5V Doc. No. MV-S101948-00, Rev. D Page 10 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Signal Description Pin Diagram for 88MG816 & 88MG831 1.2 Pin Diagram for 88MG816 & 88MG831 Figure 3: 88MG816 & 88MG831 Package - Component View PSET SHDN 88MG816-S 88MG831-S 7 4 88 MG 816-D 88 MG 831-D 88 MG 816-T 88 MG 831-T 8 SHDN 6 VIN 5 GND 4 VOUT 3 MISSING PIN VSET 2 GND PSET 1 5 6 VSET 1 2 GND VOUT 3 VIN Figure 4: Connection Block Configuration Sample for 88MG816 & 88MG831 SHDN GND VIN VOUT VSET MISSING PIN GND Optional PSET 88 MG816-S 88 MG831-S Load 3V-5.5V Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 11 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions 1.3 Pin Description Na me Pin Desc ription 1 LDO_OUT Secondary Output Voltage. Connect directly to load with a short wide PCB trace. PSET Percent Set. An external resistor is connected to the ground to trim the set voltage by the percentage value. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltageTM Technology" on page 14 for resistor values and percentage options. A resistor with tolerance better than 5% can be used. The total capacitance between this pin and GND should be less than 25 pF. Shorting this pin to ground, floating this pin, or using RPSET > 619K or RPSET < 7.68K does not affect the set voltage. If this pin is not used, it should be tied to GND. GND Power ground. Connect all GND pins to a suitable low-impedance ground plane. NC Not connected. No pin. VSET Voltage set. An external resistor is connected to ground to set the output voltage of the switching regulator. See Table 1 in the Section 2.1 "Output Voltage - AnyVoltageTM Technology" on page 14 for resistor values and output voltage options. A resistor with tolerance better than 5% can be used. The total capacitance across this pin and GND should be less than 25 pF. Shorting this pin to ground, floating this pin, or using RVSET > 619K or RVSET < 7.68K disables the switching regulator. VOUT Switch Output Voltage. Connect directly to load with a short wide PCB trace. LDO_OUT LDO Output voltage. Connect directly to load with a wide, low impedance PCB trace. VIN 3V - 5.5V Input voltage. SHDN Shutdown. Logic low ( 0.8V) enables the regulator. Logic high ( 2.0V) disables the regulator. The high signal has to be at least 20 s long to disable the regulator. 1. This pin is present in 88MG815z & 88MG830z only. Doc. No. MV-S101948-00, Rev. D Page 12 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Signal Description Pin Assignment Table 1.4 Pin Assignment Table N ame 88 MG81 5z-S 88 MG83 0z-S 88MG815z-D/T 88MG830z-D/T 8 8MG81 6-S 8 8MG83 1-S 88MG816 -D/T 88MG831 -D/T LDO_OUT 1 1 - - PSET 2 6 1 5 GND 3,7 3 2,6 2 MISSING PIN 4 - 3 - VSET 5 5 4 4 VOUT 6 2 5 1 VIN 8 4 7 3 SHDN 9 7 8 6 Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 13 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 2. Functional Description 2.1 Output Voltage - AnyVoltageTM Technology The output voltage of the 88MG815/88MG816/88MG830/88MG831 Series is programmed by using the look-up Table 1 or Table 2 to select the resistor value for the VSET and PSET pins. The VSET pin sets the output voltage, and the PSET pin trims the set voltage to a percentage value. For example, Using Table 1 to program 2.25V output, a 165K resistor is selected for the VSET pin, and an 11K resistor is selected for the PSET pin. The 160K resistor sets the output voltage to 2.5V and the 11K resistor trims the set voltage off by 10% (or -10%). Using a resistor value greater than 619K or less than 7.68K for the VSET pin disables the switching regulator and sets the SW pin to high impedance. Using a resistor value greater than 619K or less than 7.68K for the PSET pin does not affect the set voltage. If not used, the PSET pin should be tied to ground. Using the VSET resistor's value greater than 619 kohm or less than 7.68 kohm disables the step-down switching regulator and sets the SW pin to high impedance. if the VSET resistor's value is outside the 5% tolerance, the output can be either higher or lower than the set voltage. Using resistor value greater than 619 kohm or less than 7.68 kohm for the PSET pin does not affect the set voltage. When the PSET pin is not used, it must be connected to ground. Like the VSER resistor, the percent value can be either higher or lower if the PSER resistor's value is outside the 5% tolerance. Table 1: Any Voltage Programming Table for 5% Resistors VSET PSET -10.0% -7.5% -5.0% -2.5% 0% 2.5% 11k 18k 3 0k 51k GND 1 00k 160k 270 k 47 0k 11k 0.720 0.740 0.760 0.780 0.800 0.820 0.840 0.860 0.880 18 k 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100 30 k 1.080 1.110 1.140 1.170 1.200 1.230 1.260 1.290 1.320 51 k 1.350 1.388 1.425 1.463 1.500 1.538 1.575 1.613 1.650 10 0k 1.620 1.665 1.710 1.755 1.800 1.845 1.890 1.935 1.980 16 0k 2.250 2.313 2.375 2.438 2.500 2.563 2.625 2.688 2.750 27 0k 2.700 2.775 2.850 2.925 3.000 3.075 3.150 3.225 3.300 47 0k 2.970 3.053 3.135 3.218 3.300 3.383 3.465 3.548 3.630 Doc. No. MV-S101948-00, Rev. D Page 14 5 .0 % 7.5% 10 .0 % Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Description Output Voltage - AnyVoltageTM Technology Table 2: AnyVoltageTM Programming Table for 1% Resistors VSET PSET -10.0% -7.5% -5.0% -2 .5 % 2 .5 % 5.0% 7.5% 1 0.0% 11k 18. 7k 3 1. 6k 53 .6 k O pe n /GND 9 7.6k 165 k 28 0k 4 75k GN D 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 11 k 0.720 0.740 0.760 0.780 0.800 0.820 0.840 0.860 0.880 1 8.7 k 0.900 0.925 0.950 0.975 1.000 1.025 1.050 1.075 1.100 3 1.6 k 1.080 1.110 1.140 1.170 1.200 1.230 1.260 1.290 1.320 5 3.6 k 1.350 1.388 1.425 1.463 1.500 1.538 1.575 1.613 1.650 9 7.6 k 1.620 1.665 1.710 1.755 1.800 1.845 1.890 1.935 1.980 1 65k 2.250 2.313 2.375 2.438 2.500 2.563 2.625 2.688 2.750 2 80k 2.700 2.775 2.850 2.925 3.000 3.075 3.150 3.225 3.300 4 75k 2.970 3.053 3.135 3.218 3.300 3.383 3.465 3.548 3.630 O pe n 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 The VSET and PSET resistor are read once during start-up before the output voltage is turned on. After the output voltage is turned on, the VSET and PSET resisters are ignored.This ascertains that the output voltage tolerance is not dependant upon the tolerance or thermal characteristics of these resistors. Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 15 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions 2.2 Output Voltage Margining A useful application of the Marvell(R) AnyVoltageTM technology is "output voltage margining". Voltage margining is commonly used during system qualification to evaluate operation at "corner" conditions of voltage, temperature etc. Typically, output voltage will be offset up and down by some percentage (margin) of the nominal value. For the 88MG815/88MG816/88MG830/88MG831 Series the VSET pin/resistor controls the nominal voltage of the switching regulator output while the PSET pin/resistor controls the margin voltage. As can be seen in Table 1, the PSET pin allows the margin to be set as high as 10% above and as low as -10% below the nominal setpoint established by VSET. Depending on the value of the PSET resistor intermediate points of 7.5%, 5% and 2.5% can also be accessed. For example, if an application calls for a nominal output voltage of 1.5V then Table 1 prescribes a value of R1 for the VSET resistor. This selection is shown in Figure 6 connected to the VSET pin. To offset the voltage above and below the nominal value, the PSET pin can be used with resistor values again from Table 1. Additionally, switches S1 and S2 can be alternately closed to select from the two resistors - R3 and R2 (offset values) for PSET. If more offsets are required more switches and resistors may be used. As shown in the figures below, if S1 is closed and S2 opened a positive 5% offset would be added to the nominal 1.5V output yielding 1.575V. Conversely, if S1 is opened and S2 closed the output would be offset to -5% from 1.5V, or 1.425V. Finally with both S1 and S2 opened the output would return to the nominal 1.5V. Thus voltage margining can be simply and reliably implemented with a minimum of components and design effort. Figure 5: Output Voltage Margining for 88MG815z & 88MG830z VIN SHDN GND VSET BUCK_OUT GND PSET LDO_OUT 88MG815z 88MG830z Load1 Load2 R3 S2 R2 S1 3.0V-5.5V R1 Doc. No. MV-S101948-00, Rev. D Page 16 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Description LDO Versions 2.3 LDO Versions The 88MG815z and 88MG830z versions have a second output voltage regulated as a Low Dropout Linear regulator. This is identified by the LDO_OUT output. The LDO controller is part of the Marvell(R) power IC on the module. The linear pass element is a small P-Channel MOSFET. The LDO output is enabled immediately after the SHDN pin is pulled low. 2.3.1 LDO Output Voltage The fixed output voltage of the LDO is either 3.3V or 2.5V, depending upon the selected version of the module.The "z" in the part number determines this. If z = B, then LDO_OUT = 3.3V, if z = E then LDO_OUT = 2.5V. The LDO is short-circuit protected to a current of approximately 1A. The output current rating of the LDO is 450 mA continuous over the Industrial Temperature range. It is thermally limited because of the limited copper area available on the module for heat dissipation. The module can deliver peak currents of 800 mA for very brief times, such as 1 ms without damage. Figure 6: Output Voltage Margining for 88MG816 & 88MG831 SHDN VIN GND GND VSET VOUT PSET 88MG816 88MG831 Load R3 R2 3V-5.5V S2 S1 R1 Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 17 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions 2.4 Regulation and Start-up The step-down switching regulator uses Pulse Width Modulation (PWM) And Pulse Frequency Modulation (PFM) modes to regulate the output voltage using digital control. The mode of operation depends on the level of output current and the output voltage. In steady states, the step-down switching regulator monitors the current flowing through the inductor to determine if the regulator is handling heavy or light load applications. For heavy load applications, the step-down regulator operates in the PWM mode (B and C) to minimize the ripple current for optimum efficiency and to minimize the ripple output voltage. The step-down regulator operates in the PFM and Discontinuous Conduction Mode (DCM) (A and D) to limit the switching action for optimum efficiency in light load applications. In this mode, the average output voltage is slightly higher than the average output voltage for heavy transient load applications. Figure 7: Output Voltage Window A B Typical Vout C D PFM Mode PWM Moed PFM Mode 2.5 Digital Soft Start During start-up, the 88MG815/88MG816, 1A Rated Output Current provides a soft start function. Soft start reduces surge currents from input voltage and provides a well-controlled output voltage rise characteristics. The rate of the output voltage start-up is limited by the value of the output capacitor and the internal current limit circuitry. This combination forces the output voltage to come up slowly, providing a soft-start characteristic. During soft start, the 88MG815/88MG816, 1A Rated Output Current feeds a constant current to the output capacitor in several steps. Figure 4 of the MVPG15x/16 datasheet shows the inductor current waveform during startup. The current limit is ramped up in 7 steps beginning at approximately 40% of the current limit rating and ending at 100% at 25 s per step. The buck regulator behaves like a current source during this time as the output ramps up slowly. Doc. No. MV-S101948-00, Rev. D Page 18 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Description Undervoltage Lockout (UVLO) 2.6 Undervoltage Lockout (UVLO) The 88MG815/88MG816/88MG830/88MG831 Series incorporates undervoltage-lockout circuitry to disable the step-down regulator when the input voltage is below 2.75V (typical). The step-down regulator is enabled when the input voltage is above 2.85V (typical). 2.7 Thermal Shutdown If the junction temperature of the Control IC on 88MG815/88MG816/88MG830/88MG831 Series exceeds 150C (typical), the thermal shutdown circuitry disables the step-down regulator. The step-down regulator is enabled when the junction temperature falls to 120C (typical). Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 19 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 3. Electrical Specifications 3.1 Absolute Maximum Ratings Table 3: Absolute Maximum Ratings Stresses above those listed in Absolute Maximum Ratings may cause permanent device failure. Functionality at or above those limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. Para meter Symbol R ange Units Input Voltage to GND VIN -0.3 to 6.0 V Voltage Set to GND VSET -0.6 to (VIN + 0.3) V Percentage Set Voltage to GND VPSET -0.6 to (VIN + 0.3) V Shutdown Voltage to GND VSHDN -0.6 to (VIN + 0.3) V Storage Temperature Range TSTOR -65 to +150 C Output Current (Peak Switch Current) for 88MG815z & 88MG816 IPEAK 1.5 A Output Current (Peak Switch Current) for 88MG830z & 88MG831 IPEAK 3.0 A Rated Output Current for 88MG815z & 88MG816 IOUT 1 A Rated Output Current for 88MG830z & 88MG831 IOUT 2 A LDO Current IOUTLDO 450 mA 3.2 Table 4: Recommended Operating Conditions Recommended Operating Conditions1 Param eter Sym bo l R ang e Units Input Voltage VIN 3 to 5.5 V Operating Temperature Range2 TOP -40 to +85 C 1. This device is not guaranteed to function outside the specified operating range. 2. This device is guaranteed to meet the specifications from 0C to 70C. Any specifications that pertains to the operating temperature range -40C to +85C are assured by design, characterization, and correlation with statistical process controls. Doc. No. MV-S101948-00, Rev. D Page 20 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Electrical Specifications Electrical Characteristics 3.3 Electrical Characteristics Table 5: Electrical Characteristics The following applies unless otherwise noted: VIN = 5.0V. TA = 25C. Bold values indicate -40C TA 85C. Pa rameter Symbol Input Voltage Range VIN Condition Min Typ Total Quiescent Current (No Load) IIN Shutdown Supply Current IIN VSHDN = VIN = 5.5V 1 10 A Undervoltage Lockout VUVLO High threshold, VIN increasing 2.85 3.00 V 3.0 Max Units 5.5 V 1.3 Low threshold, VIN decreasing 2.65 mA 2.75 V Shutdown Input Voltage Logic VSHDN Shutdown Input Current ISHDN VSHDN = GND or 5.5V Over-Temperature Thermal Shutdown TOTS TJ increasing (disable regulator) 150 C TJ decreasing (enable regulator) 120 C 1 MHz Switching Frequency Enable regulator Disable regulator 0.8 V 1 A 2.0 fSW V El ectrical Material Rati ng Flammability Rating UL94V-0 Material Type TBD Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 21 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Table 6: 88MG815/88MG816, 1A Rated Output Current Electrical Characteristics Pa rame te r Sy mbo l C on di tio n Line Regulation IOUT = 1A Load Regulation Mi n Typ Ma x Units 0.2 % IOUT = 0.2A to 2.0A 0.5 % Line Regulation LDO IOUT = 800 mA VIN = 4.0V to 5.5V 0.2 % Load Regulation LDO IOUT = 10 mA to 800 mA 0.5 % VOUT = 0.8V IOUT = 1A (without external filter) 15 mA pk-pk 50 mV pk-pk VIN = 3.0V to 5.5V Input Current Ripple IIN ripple Input Voltage Ripple VIN ripple Output Voltage Accuracy 2 Output Voltage Noise Table 7: IOUT = 2.0A VOUT = 1.8V 8.0 % mV RMS 88MG830/88MG831, 2A Rated Output Current Electrical Characteristics Pa rame te r Sy mbo l Line Regulation C on di tio n Mi n IOUT = 2A Typ Ma x 0.2 Units % VIN = 3.0V to 5.5V Load Regulation IOUT = 0.2A to 2.0A 0.5 % Line Regulation LDO IOUT = 800 mA VIN = 4.0V to 5.5V 0.2 % Load Regulation LDO IOUT = 10 mA to 800 mA 0.5 % VOUT = 0.8V IOUT = 2A (without external filter) 15 mA pk-pk 50 mV pk-pk Input Current Ripple IIN ripple Input Voltage Ripple VIN ripple Output Voltage Accuracy Output Voltage Noise 2 IOUT = 2.0A VOUT = 1.8V Doc. No. MV-S101948-00, Rev. D Page 22 8.0 % mV RMS Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Electrical Specifications Electrical Characteristics Table 8: LDO Output Electrical Characteristics Pa rameter Line Regulation Symbol Condition Min IOUT = 1A Typ Max Units 0.2 % 0.5 % VIN = 3.0V to 5.5V Load Regulation IOUT = 0.25A to 1.0A Output Voltage Accuracy 2 Copyright (c) 2006 Marvell February 21, 2006, Preliminary % Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 23 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 4. Functional Characteristics 4.1 Startup Waveforms Start-up Using the Shutdown Pin Turn Off Using the Shutdown Pin VLDO 2V/DIV VLDO 2V/DIV VBUCK 500mV/DIV VBUCK 500mV/DIV VSHDN 2V/DIV VSHDN 2V/DIV 1 ms/DIV VIN = 5.0V 1 ms/DIV tDLY ~ 3.5 ms VIN = 5.0V VLDO = 3.3V VLDO = 3.3V VBUCK = 1.2V VBUCK = 1.2V ILOAD = No Load ILOAD = No Load Enable Threshold at VIN = 3.0V Enable Threshold at VIN = 5.0V VLDO 2V/DIV VLDO 2V/DIV VBUCK 1V/DIV VBUCK 1V/DIV VSHDN 1V/DIV 1V/DIV VSHDN 100 ms/DIV VIN = 5.0V 100 ms/DIV VTH = 0.7V (Note) VIN = 5.0V VLDO = 3.3V VLDO = 3.3V VBUCK = 1.2V VBUCK = 1.2V ILOAD = 10 mA ILOAD = 10 mA VTH = 0.9V (Note) NOTE: There is a delay (3.5 ms typ) before the output voltage turns on. The actual threshold is before delay. Doc. No. MV-S101948-00 Rev. D Page 24 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Characteristics Startup Waveforms VIN Soft Start VIN Hot Plug VIN 5V/DIV VIN 5V/DIV VLDO 2V/DIV VLDO 2V/DIV VBUCK 1V/DIV VBUCK _ 2 ms/DIV 1 ms/DIV VIN = 5.0V VIN = 5.0V VLDO = 3.3V VLDO = 3.3V VBUCK = 1.2V VBUCK = 1.2V ILOAD = No Load ILOAD = No Load 88MG830 Step-down Output Rise Time VOUT 1V/DIV 88MG830 Soft Start Current Limit (See Note) 500mV/DIV 1A/DIV IIND 1A/DIV IIND 5 s/DIV 50 s/DIV VIN = 5.0V VIN = 5.0V VOUT= 1.2V VOUT = 3.3V ILOAD = 500 mA NOTE: Graph shows the full range of Soft Start Current Limit. This test was conducted under an output overload condition and the output voltage is not in regulation. Realistically, this condition would result in thermal shutdown in a short time. Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00 Rev. D Document Classification: Proprietary Information Page 25 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions UVLO Thresholds VIN 2V/DIV VLDO 2V/DIV VBUCK 2V/DIV 10 ms/DIV VIN = 5.0V VHTH = 2.966V VLDO = 3.3V VLTH = 2.767V VBUCK = 1.2V ILOAD = 10 mA Doc. No. MV-S101948-00 Rev. D Page 26 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Characteristics Load Transient Response Waveforms 4.2 Load Transient Response Waveforms 4.2.1 88MG830 Step-Down Regulator Load Transient Response Double-Pulsed Load Response VBUCK 100mV/DIV VBUCK 100mV/DIV ILOAD 2A/DIV ILOAD 2A/DIV 20 s/DIV 20 s/DIV VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A VBUCK = 1.2V tRISE = 6A/s VBUCK = 1.2V tRISE = 6A/s COUT = 22 F tFALL = 129A/s COUT = 22 F tFALL = 129A/s Load Transient Response (Additional Output Capacitance) Double-Pulsed Load Response VBUCK 100mV/DIV VBUCK 100mV/DIV ILOAD 2A/DIV ILOAD 2A/DIV 20 s/DIV 20 s/DIV VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A VBUCK = 1.2V tRISE ~ 6A/S VBUCK = 1.2V tRISE ~ 6A/S Additional COUT = 22 F tFALL ~ 129A/S Additional COUT = 22 F tFALL ~ 129A/S Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00 Rev. D Document Classification: Proprietary Information Page 27 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Load Transient Response (2 x Additional Output Capacitance) Double-Pulsed Load Response VBUCK VBUCK 100mV/DIV ILOAD 2A/DIV 100mV/DIV ILOAD 2A/DIV 20 s/DIV 20 s/DIV VIN = 5.0V ILOAD = 0.2A to 2A VIN = 5.0V ILOAD = 0.2A to 2A VBUCK = 1.2V VBUCK = 1.2V Additional COUT = 2X22 F Additional COUT = 2X22 F 4.2.2 LDO Regulator Load Transient Response VBUCK 50mV/DIV ILOAD 1A/DIV 20 s/DIV VIN = 5.0V ILOAD = 0.2A to 0.8A VLDO = 3.3V Doc. No. MV-S101948-00 Rev. D Page 28 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Characteristics Switching Waveforms 4.3 Switching Waveforms PWM Output Ripple Voltage _ VBUCK 20mV/DIV 2 ms/DIV VIN = 5.0V VBUCK = 1.2V IOUT = 2A VOUT(P-P) = 15.7 mV (Note) NOTE: For repeatability of measuring output ripple (VOUT(P-P)), the test procedure is to set the scope bandwidth to 20MHz and uses a coax cable with very short leads terminated into 50. The coax leads must be routed away from the switching node as much as possible. Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00 Rev. D Document Classification: Proprietary Information Page 29 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions 4.4 Efficiency 88MG830 EFFICIENCY VS. OUTPUT CURRENT V IN = 5.0V @ 25 C 100 Efficiency (%) 90 80 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V 0.8V 70 60 50 0 0.5 1 1.5 2 Output Current (A) 88MG830 EFFICIENCY VS. OUTPUT CURRENT V IN = 3.3V @ 25 C 100 Efficiency (%) 90 80 2.5V 1.8V 1.5V 1.2V 1.0V 0.8V 70 60 50 0 0.5 1 1.5 2 Output Current (A) Doc. No. MV-S101948-00 Rev. D Page 30 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Functional Characteristics Considerations for Bench Testing and Hot Plug Applications 4.5 Considerations for Bench Testing and Hot Plug Applications These power modules have an Absolute Maximum input voltage rating of 6V. This means you must be careful when bench testing or with applications that require "Hot Plugging" of VIN to the system. Hot Plug applications are those that instantly apply voltage to a power module from a long cable. Common examples of this are: Bench top power supplies that supply power to the module through long banana plug cords and power obtained from "wall wart" linear supplies. It turns out that long cables or wires can act as "transmission cables" and when the power is applied to the module input, the result is a reflected transient wave that can almost DOUBLE the input voltage. This can have the consequence of destroying the power module because its maximum input voltage rating has been exceeded. This is not a power module "problem", but an application environment problem that can be overcome. 4.5.1 Hot Plug Solution The input voltage ringing on a long power cord occurs because the cable sees an AC short-circuit at the input of the power module. This is because the input capacitor to the module is a ceramic capacitor with extremely low ESR. To minimize or eliminate the amplitude of the ringing voltage it is necessary to add external capacitors in parallel to the module input capacitors. However, these capacitors need to have noticeable ESR - which is what dampens the ringing. When bench testing or working on a "hot plug" application, Marvell recommends the following practice: 4.5.2 Hot Plug Protection for bench testing and Wall Wart Applications * Add a 22uF - 100uF Tantalum capacitor located near the input connector of your system. The measurable ESR of the Tantalum capacitor will help dissipate any potential ringing expected from the input line. The additional capacitance and use of capacitors with measurable ESR results in keeping any voltage overshoot less than 6V. Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00 Rev. D Document Classification: Proprietary Information Page 31 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 5. Mechanical Drawings 5.1 Mechanical Dimensions for 88MG815z & 88MG830z Figure 8: 88MG815z & 88MG830z SIP Series Mechanical Dimensions PCB 0.047(1.19)MAX. 8-O 0.030(0.762) 1 2 3 4 5 6 8 7 0.025(0.64) (2.54) (2.54) (2.54) (2.54) (2.54) (2.54) TOP VIEW SIDE VIEW Doc. No. MV-S101948-00, Rev. D Page 32 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Mechanical Drawings Mechanical Dimensions for 88MG815z & 88MG830z Figure 9: 88MG815z & 88MG830z DIP Series Mechanical Dimensions PCB (3.18) PIN(7X) 7-O 0.028(0.71) (3.23) (3.18) (3.18) TOP VIEW Copyright (c) 2006 Marvell February 21, 2006, Preliminary SIDE VIEW Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 33 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Figure 10: 88MG815z & 88MG830z SMT Series Mechanical Dimensions PCB (3.18) 7 6 5 7-?0.079(2.0)? 0.079(2.0) Pad 7-O 0.079(2.0) Pad 1 (3.23) 2 3 (3.18) 4 (3.18) TOP VIEW Doc. No. MV-S101948-00, Rev. D Page 34 SIDE VIEW Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Mechanical Drawings Mechanical Dimensions for 88MG816 & 88MG831 5.2 Mechanical Dimensions for 88MG816 & 88MG831 Figure 11: 88MG816 & 88MG831 SIP Series Mechanical Dimensions PCB 0.047(1.19)MAX. 7-O 0.030(0.762) 1 2 3 4 5 6 7 0.025(0.64) (2.5 4) (2.5 4) (2.5 4) (2.5 4) (2.5 4) TOP VIEW Copyright (c) 2006 Marvell February 21, 2006, Preliminary SIDE VIEW Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 35 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Figure 12: 88MG816 & 88MG831 DIP Series Mechanical Dimensions PCB (3.18) (3.23) 6 4 5 PIN(6X) 6-O 0.028(0.71) 1 3 2 (3.23) (3.18) TOP VIEW SIDE VIEW Doc. No. MV-S101948-00, Rev. D Page 36 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Mechanical Drawings Mechanical Dimensions for 88MG816 & 88MG831 Figure 13: 88MG816 & 88MG831 SMT Series Mechanical Dimensions PCB (3.18) (3.23) 6 5 4 6-?0.079(2.0) Pad 1 2 (3.23) 3 6-O 0.063(1.6) Pad (3.18) TOP VIEW Copyright (c) 2006 Marvell February 21, 2006, Preliminary SIDE VIEW Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 37 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions Section 6. Ordering Information 6.1 Ordering Part Numbers and Package Markings Figure 14 shows the ordering part numbering scheme for the 88MG815z & 88MG830z devices. Contact Marvell(R) FAEs or sales representatives for complete ordering information. Figure 14: 88MG815z & 88MG830z Part Number 88MG815 z A0-x Package Code Part Number S- SIP D-DIP T-SMT 88MG815 88MG830 LDO Output Voltage Options e.g., B = 3.3V E = 2.5V Internal Code Figure 15: 88MG816 & 88MG831 Part Number 88MG816 - A0 -x Part Number 88MG816 88MG831 Package Code S- SIP D-DIP T-SMT Internal Code Doc. No. MV-S101948-00, Rev. D Page 38 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Ordering Information Sample Ordering Part Number 6.2 Sample Ordering Part Number The standard ordering part numbers for the respective solutions are as follows: Table 9: Ordering Part Numbers Part Number Switcher O ut p ut Vo ltag e LDO Ou tpu t Vol tage O ut p ut C urr ent Ambie nt Te mpe ratu re Range 1 Pa ckag e 88MG815B -S Programmable 3.3V 1.0A -40C to 85C 9-pin SIP 88MG815E-S Programmable 2.5V 1.0A -40C to 85C 9-pin SIP 88MG815B-D Programmable 3.3V 1.0A -40C to 85C 7-pin DIP 88MG815E-D Programmable 2.5V 1.0A -40C to 85C 7-pin DIP 88MG815B-T Programmable 3.3V 1.0A -40C to 85C 7-pin SMT 88MG815E-T Programmable 2.5V 1.0A -40C to 85C 7-pin SMT 88MG816-S Programmable -- 1.0A -40C to 85C 8-pin SIP 88MG816-D Programmable -- 1.0A -40C to 85C 6-pin DIP 88MG816-T Programmable -- 1.0A -40C to 85C 6-pin SMT 88MG830B-S Programmable 3.3V 2.0A -40C to 85C 9-pin SIP 88MG830E-S Programmable 2.5V 2.0A -40C to 85C 9-pin SIP 88MG830B-D Programmable 3.3V 2.0A -40C to 85C 7-pin DIP 88MG830E-D Programmable 2.5V 2.0A -40C to 85C 7-pin DIP 88MG830B-T Programmable 3.3V 2.0A -40C to 85C 7-pin SMT 88MG830E-T Programmable 2.5V 2.0A -40C to 85C 7-pin SMT 88MG831-S Programmable -- 2.0A -40C to 85C 8-pin SIP 88MG831-D Programmable -- 2.0A -40C to 85C 6-pin DIP 88MG831-T Programmable -- 2.0A -40C to 85C 6-pin SMT 1. Any specifications that pertains to the operating temperature range -40C to 85C are assured by design, characterization, and correlation with statistical process controls. Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 39 88MG815/88MG816/88MG830/88MG831 Non Isolated, Step-Down Switching Regulator Module with AnyVoltageTM Technology. Single and Dual Output Voltage Versions 6.3 Package Marking 6.3.1 88MG815z Package Marking Figure 16 is an example of the package marking for the 88MG815z part. Markings for the other variants are similar. Figure 16: 88MG815z Package Marking L DO O ut p u t Vo lta ge O p t io n s G15 zy Pac ka ge O p t io n s (S , D , o r T ) Part Number YWW$ Year, Work week, Assembly code Y WW $ = Last digit of year = Work week = Assembly code Note: The above example is not drawn to scale. Locations of markings are approximate. Doc. No. MV-S101948-00, Rev. D Page 40 Copyright (c) 2006 Marvell Document Classification: Proprietary Information February 21, 2006, Preliminary Ordering Information Package Marking Table 10: Marking Specification Table Part Num ber Ab br eviation s 88MG815B-S G15BS 88MG815E-S G15ES 88MG815B-D G15BD 88MG815E-D G15ED 88MG815B-T G15BT 88MG815E-T G15ET 88MG816-S G16-S 88MG816-D G16-D 88MG816-T G16-T 88MG830B-S G30BS 88MG830E-S G30ES 88MG830B-D G30BD 88MG830E-D G30ED 88MG830B-T G30BT 88MG830E-T G30ET 88MG831-S G31-S 88MG831-D G31-D 88MG831-T G31-T Copyright (c) 2006 Marvell February 21, 2006, Preliminary Doc. No. MV-S101948-00, Rev. D Document Classification: Proprietary Information Page 41 Marvell Semiconductor, Inc. 5488 Marvell Lane Santa Clara, CA 95054, USA Tel: 1.408.222.2500 Fax: 1.408.752.9028 www.marvell.com Worldwide Corporate Offices Worldwide Sales Offices Marvell Semiconductor, Inc. 5488 Marvell Lane Santa Clara, CA 95054, USA Tel: 1.408.222.2500 Western US Marvell 5488 Marvell Lane Santa Clara, CA 95054, USA Tel: 1.408.222.2500 Fax: 1.408.752.9028 Sales Fax: 1.408.752.9029 Marvell Asia Pte, Ltd. 151 Lorong Chuan, #02-05 New Tech Park, Singapore 556741 Tel: 65.6756.1600 Fax: 65.6756.7600 Marvell Japan K.K. Shinjuku Center Bldg. 44F 1-25-1, Nishi-Shinjuku, Shinjuku-ku Tokyo 163-0644, Japan Tel: 81.(0).3.5324.0355 Fax: 81.(0).3.5324.0354 Marvell Semiconductor Israel, Ltd. 6 Hamada Street Mordot HaCarmel Industrial Park Yokneam 20692, Israel Tel: 972.(0).4.909.1500 Fax: 972.(0).4.909.1501 Marvell Semiconductor Korea, Ltd. 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