ST2052 Current limited power distribution switches Not recommended for new design Features 80 m high-side MOSFET switch 500 mA continuous current per channel independent thermal and short-circuit protection with overcurrent logic output Operating range from 2.7 V to 5.5 V CMOS- and TTL-compatible enable inputs r P e 10 ms OC_N fault-blanking 2.5 ms typical rise time Undervoltage lock out 10 A maximum standby supply current Ambient temperature range, -40 C to 85 C ESD protection t c u Order code ST2052BDR(1) P e d o r t e l o ) (s Device summary ST2052BD(1) u d o SO-8 Table 1. ) s ( ct s b O Package Packaging SO-8 Tube (50 parts per tube, 40 tube per box) SO-8 Tape and reel (2500 parts per reel) 1. Not recommended for new design (refer to STMPS2252MTR). Contact ST sales office for availability. t e l o s b O November 2010 Doc ID 9994 Rev 4 This is information on a product still in production but not recommended for new designs. 1/14 www.st.com 14 Contents ST2052 Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ) s ( ct 4.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 u d o r P e 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 t e l o ) (s s b O t c u d o r P e t e l o s b O 2/14 Doc ID 9994 Rev 4 ST2052 1 Description Description The ST2052 power distribution switches is intended for application where heavy capacitive loads and short -circuits are likely to be encountered. These devices incorporate 80 m N-channel MOSFET high-side power switches for power-distribution systems that require multiple powers switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. A 10 ms deglitching circuit provides faultblanking feature, preventing the OC_N pin to be asserted during hot-insertion or short spikes of overcurrent conditions. ) s ( ct u d o When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.9 A. r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 9994 Rev 4 3/14 Block diagram 2 ST2052 Block diagram Figure 1. Block diagram ) s ( ct Power switch r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 4/14 Doc ID 9994 Rev 4 u d o ST2052 3 Pin connections Pin connections Figure 2. Pin connections (top view) ) s ( ct Table 2. u d o r P e Pin functions Pin Symbol 1 GND 2 IN 3 EN1 4 EN2 5 OC2 Input voltage OUT2 7 u d o 8 t e l o Ground OUT1 OC1 s b O Enable input. Logic high turns on power switch IN-OUT1. )- s ( t c 6 Description Enable input. Logic high turns on power switch IN-OUT2. Overcurrent. Logic output active low IN-OUT2. Power switch output Power switch output Overcurrent. Logic output active Low IN-OUT2. r P e t e l o s b O Doc ID 9994 Rev 4 5/14 Electrical ratings ST2052 4 Electrical ratings 4.1 Absolute maximum ratings Stressing the device above the rating listed in the "Absolute Maximum Ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronicsTM SURE program and other relevant quality documents. Table 3. Symbol Parameter VO Output voltage range VIENX ete Continuous output current ESD s b O Junction operating temperature 1. All voltages are referred to GND. ) (s V -0.3 - (VI + 0.3) o r P V -0.3 to 6 V 2 kV -40 to 125 C Internally limited ol Electrostatic discharge TJ Unit du -0.3 to 6 (1) EN Input voltage range IO Recommended operating conditions Table 4. P e o s b Parameter Input voltage range(1) Min Typ Max Unit 2.7 5.5 V VO Output voltage range(1) 0 5.5 V IO Continuous output current (per switch) 0 500 mA VI let t c u Recommended operating conditions d o r Symbol 1. All voltages are referred to GND. O 6/14 Value Input voltage range(1) VI 4.2 ) s ( ct Absolute maximum ratings Doc ID 9994 Rev 4 ST2052 5 Electrical characteristics Electrical characteristics VI = 5.5 V, IO = rated current, VIEN = VI, TJ = 25 C, unless otherwise specified. (See Note 1 on page 8). Table 5. Symbol RDS(on) Power switch electrical characteristics Parameter Static drain-source ON-state resistance Test conditions Min Output rise time IO = 0.5 A 80 100 VI = 5 V IO = 0.5 A, TJ = 85 C 90 120 VI = 5 V IO = 0.5 A, TJ =125 C 100 135 VI = 3.3 V IO = 0.5 A 90 125 VI = 3.3 V IO = 0.5 A, TJ = 85 C 110 145 Output fall time Symbol e t e l RL = 10, C L = 1F o s b m t c u od 120 Pr 160 2.5 ms 3 0.3 ms 0.2 Enable Input ENx characteristics O ) Parameter Test conditions s ( t c Min Typ Max High level input voltage Low level input voltage VI = 4.5 to 5.5 V 0.8 VIL VI = 2.7 to 4.5 V 0.4 Input current VIENX = 0 V or VI Turn-on time Turn-off time e t e ol ton Table 7. Symbol IOS du o r P toff Unit (s) VIH II O VI = 5.5 V VI = 2.7 V Table 6. bs VI = 5.5 V VI = 2.7 V tf Max VI = 5 V VI = 3.3 V IO = 0.5 A, TJ = 125 C tr Typ VI = 2.7 to 5.5 V 2 Unit V V 0.5 A RL= 10 , CL= 100 F 20 ms RL= 10 , CL= 100 F 40 ms -0.5 Current limit characteristics Parameter Short-circuit output current Test conditions Min Typ Max Unit VI = 5 V, OUT connected to GND, device enabled into short-circuit 0.7 1 1.3 A Doc ID 9994 Rev 4 7/14 Electrical characteristics Table 8. Supply current characteristics Symbol Parameter ISOL Current low level output ISOH Current low high output IL Output leakage current Table 9. VIL VHYS Table 10. Typ Max 0.025 1 VIENX = VI, no load, TJ = -40 to 125 C 10 VIENX = 0, no load, 70 VIENX = 0, no load, TJ = -40 to 125 C 100 VIENX = VI, output connected to GND, TJ = -40 to 125 C 10 Test conditions Low level input voltage Min 2 t e l o Overcurrent (OC) characteristics Parameter Test conditions s b O Sink current VO = 5 V VO Output low voltage IO = 5 mA IOFF OFF-state current TFB Fault-blanking period ct ) (s u d o Min 2 2.5 V mV Max 0.5 V 1 A 10 2 Specified by design, not production tested. t e l o Guaranteed by design. s b O Doc ID 9994 Rev 4 Unit mA Pulse testing techniques maintain junction temperature close to ambient temperature: thermal effect must be takes into account separately. r P e A Unit 10 VO = 5 V VO = 3.3 V VI = 5.5 V, TJ = 25 C (See Note 2 and Note 3) A Max 100 Typ A ) s ( ct u d o r P e Hysteresis Typ Unit 90 1 3 8/14 Min VIENX = VI, no load, Parameter Symbol ISINK Test conditions Undervoltage characteristics Symbol Note: ST2052 ms ST2052 Electrical characteristics Figure 3. Figure 4. Test circuit Waveform - propagation delays (f = 1 MHz; 50% duty cycle) ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 9994 Rev 4 9/14 Package mechanical data 6 ST2052 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 10/14 Doc ID 9994 Rev 4 ST2052 Package mechanical data Figure 5. SO-8 package outline ) s ( ct u d o r P e t e l o Table 11. ) (s SO8 - mechanical data s b O Millimeters Symbol ct Min Min 1.75 0.053 0.069 0.10 0.25 0.004 0.010 1.10 1.65 0.043 0.065 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.15 0.157 A1 A2 e t e l B O o s b inches Max u d o A 1.35 Pr e Typ & 1.27 Typ Max 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8 (max.) 0.10 Doc ID 9994 Rev 4 0.004 11/14 Package mechanical data Figure 6. ST2052 Tape and reel SO-8 package outline ) s ( ct u d o r P e t e l o Table 12. Symbol ete A ol s b O 12/14 ) (s t c u s b O Tape and reel SO-8 mechanical data Pr od Min Millimeters Typ inches Max Min 330 Max 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ 0.504 22.4 0.519 0.882 A0 8.1 8.5 0.319 0.335 B0 5.5 5.9 0.216 0.232 K0 2.1 2.3 0.082 0.090 P0 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Doc ID 9994 Rev 4 ST2052 7 Revision history Revision history Table 13. Revision history Date Revision Changes 13-Jul-2005 2 Add bullet on pag. 1, add paragraph in the description on pag. 1 and add row TFB on Table 10. 30-May-2007 3 Updated features in cover page, document reformatted 4 Document reformatted, added "Not Recommended for New Design" and Note 1 below Table 1, corrected typo in Features, Section 1, Table 2 to Table 10, title of Figure 4, updated Table 1, Section 4.1, Section 5, ECOPACK(R) text in Section 6 and Table 11. 24-Nov-2010 ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O Doc ID 9994 Rev 4 13/14 ST2052 ) s ( ct Please Read Carefully: u d o Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. r P e All ST products are sold pursuant to ST's terms and conditions of sale. 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