LM3480 LM3480 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator Literature Number: SNVS011D LM3480 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator General Description Key Specifications The LM3480 is an integrated linear voltage regulator. It features operation from an input as high as 30V and a guaranteed maximum dropout of 1.2V at the full 100 mA load. Standard packaging for the LM3480 is the 3-lead SuperSOT (R) package. n 30V maximum input for operation n 1.2V guaranteed maximum dropout over full load and temperature ranges n 100 mA guaranteed minimum load current n 5% guaranteed output voltage tolerance over full load and temperature ranges n -40 to +125C junction temperature range for operation The 5, 12, and 15V members of the LM3480 series are intended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3480 series devices makes them a nice fit in many applications where the 2 to 2.5V dropout of LM78LXX series devices precludes their (LM78LXX series devices) use. The LM3480 series features a 3.3V member. The SOT packaging and quasi low dropout features of the LM3480 series converge in this device to provide a very nice, very tiny 3.3V, 100 mA bias supply that regulates directly off the system 5V 5% power supply. Features n 3.3, 5, 12, and 15V versions available n Packaged in the tiny 3-lead SuperSOT package Applications n n n n Tiny alternative to LM78LXX series and similar devices Tiny 5V 5% to 3.3V, 100 mA converter Post regulator for switching DC/DC converter Bias supply for analog circuits Typical Application Circuit 10007002 Connection Diagram 10007001 Top View SOT-23 Package 3-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package Package Code MF03A (Note 1) SuperSOT (R) is a registered trademark of National Semiconductor. (c) 2005 National Semiconductor Corporation DS100070 www.national.com LM3480 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator March 2005 LM3480 Ordering Information Output Voltage (V) Package Marking (Note 3) Comments 3.3 LM3480IM3-3.3 L0A 1000 Units on Tape and Reel 3.3 LM3480IM3X-3.3 L0A 3000 Units on Tape and Reel LM3480IM3-5.0 L0B 1000 Units on Tape and Reel 5 www.national.com Order Number (Note 2) 5 LM3480IM3X-5.0 L0B 3000 Units on Tape and Reel 12 LM3480IM3-12 L0C 1000 Units on Tape and Reel 12 LM3480IM3X-12 L0C 3000Units on Tape and Reel 15 LM3480IM3-15 L0D 1000 Units on Tape and Reel 15 LM3480IM3X-15 L0D 3000 Units on Tape and Reel 2 ESD (Note 7) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Operating Ratings (Note 4) Input Voltage (IN to GND) Max. Input Voltage (IN to GND) 35V 2kV 30V Power Dissipation (Note 5) 333mW Junction Temp. (TJ) Junction Temp. (Note 5) +150C Max. Power Dissipation (Note 8) Ambient Storage Temp. -65 to +150C Soldering Time, Temp. (Note 6) Wave Infrared Vapor Phase 4 sec., 260C 10 sec., 240C 75 sec., 219C -40 to +125C 250mW Electrical Characteristics LM3480-3.3, LM3480-5.0 Typicals and limits appearing in normal type apply for TA = TJ = 25C. Limits appearing in boldface type apply over the entire junction temperature range for operation, -40 to +125C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT VOUT VOUT IGND VIN VOUT Parameter Output Voltage 3.3V Conditions Typical 3.30 VIN = VNOM + 1.5V, 1 mA IOUT 100 mA 10 VIN = VNOM + 1.5V, 10 mA IOUT 100 mA 20 Ground Pin Current VNOM + 1.5V VIN 30V, No Load 2 Dropout Voltage IOUT = 10 mA Load Regulation Typical 0.7 0.9 VIN = 10V, Bandwidth: 10 Hz to 100 kHz 100 3 mV mV(max) 40 mV mV(max) 4 mA mA(max) 0.9 1.0 V V(max) V(max) 1.1 1.2 V V(max) V(max) 0.7 0.9 1.0 Output Noise Voltage 25 2 4 0.9 1.1 1.2 en V V(min) V(min) V(max) V(max) 20 40 150 Units 4.80 4.75 5.20 5.25 12 25 IOUT = 100 mA Limit 5.00 3.17 3.14 3.43 3.46 VNOM + 1.5V VIN 30V, IOUT = 1 mA Line Regulation 5.0V Limit Vrms www.national.com LM3480 Absolute Maximum Ratings (Note 4) LM3480 Electrical Characteristics (Continued) LM3480-12, LM3480-15 Typicals and limits appearing in normal type apply for TA = TJ = 25C. Limits appearing in boldface type apply over the entire junction temperature range for operation, -40 to +125C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT VOUT VOUT IGND VIN VOUT Parameter Output Voltage 12V Conditions Typical 12.00 VIN = VNOM + 1.5V, 1 mA IOUT 100 mA 14 VIN = VNOM + 1.5V, 10 mA IOUT 100 mA 36 Ground Pin Current VNOM + 1.5V VIN 30V, No Load 2 Dropout Voltage IOUT = 10 mA Load Regulation Typical Limit 15.00 11.52 11.40 12.48 12.60 VNOM + 1.5V VIN 30V, IOUT = 1 mA Line Regulation 15V Limit 14.40 14.25 15.60 15.75 V V(min) V(min) V(max) V(max) 40 mV mV(max) 75 mV mV(max) 4 mA mA(max) 0.9 1.0 V V(max) V(max) 1.1 1.2 V V(max) V(max) 16 40 45 60 2 4 0.7 0.7 0.9 1.0 IOUT = 100 mA 0.9 0.9 1.1 1.2 en Output Noise Voltage VIN = 10V, Bandwidth: 10 Hz to 100 kHz 360 Units 450 Vrms Note 1: The package code MA03B is internal to National Semiconductor Corporation and indicates a specific version of the SOT-23 package and associated mechanical drawings. Note 2: The suffix "I" indicates the junction temperature range for operation is the industrial temperature range, -40 to +125C. The suffix "M3" indicates the die is packaged in the 3-lead SOT-23 package. The suffix "X" indicates the devices will be supplied in blocks of 3k units as opposed to blocks of 250 units. Note 3: Because the entire part number does not fit on the SOT-23 package, the SOT-23 package is marked with this code instead of the part number. Note 4: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. Note 5: The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using P = (TJ - TA)/JA where TJ is the junction temperature, TA is the ambient temperature, and JA is the junction-to-ambient thermal resistance. The 333 mW rating results from substituting the Absolute Maximum junction temperature, 150C, for TJ , 50C for TA, and 300C/W for JA. More power can be safely dissipated at lower ambient temperatures. Less power can be safely dissipated at higher ambient temperatures. The Absolute Maximum power dissipation can be increased by 3.33 mW for each C below 50C ambient. It must be derated by 3.33 mW for each C above 50C ambient. A JA of 300C/W represents the worst-case condition of no heat sinking of the 3-lead plastic SOT-23 package. Heat sinking enables the safe dissipation of more power. The LM3480 actively limits its junction temperature to about 150C. Note 6: Times shown are dwell times. Temperatures shown are dwell temperatures. For detailed information on soldering plastic small-outline packages, refer to the Packaging Databook available from National Semiconductor Corporation. Note 7: For testing purposes, ESD was applied using the human-body model, a 100 pF capacitor discharged through a 1.5 k resistor. Note 8: As with the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 250 mW rating appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125C, for TJ, 50C for TA, and 300C/W for JA in P = (TJ - TA)/JA. More power can be dissipated at lower ambient temperatures. Less power can be dissipated at higher ambient temperatures. The maximum power dissipation for operation appearing under Operating Ratings can be increased by 3.33 mW for each C below 50C ambient. It must be derated by 3.33 mW for each C above 50C ambient. A JA of 300C/W represents the worst-case condition of no heat sinking of the 3-lead plastic SOT-23 package. Heat sinking enables the dissipation of more power during operation. Note 9: A typical is the center of characterization data taken with TA = TJ = 25C. Typicals are not guaranteed. Note 10: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with TA = TJ = 25C. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control. Note 11: All voltages except dropout are with respect to the voltage at the GND pin. www.national.com 4 LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. Dropout Voltage vs Load Current Dropout Voltage vs Junction Temperature 10007020 10007019 Ground Pin Current vs Input Voltage Ground Pin Current vs Input Voltage 10007009 10007010 5 www.national.com LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. (Continued) Ground Pin Current vs Load Current Ground Pin Current vs Junction Temperature 10007021 10007022 Input Current vs Input Voltage Input Current vs Input Voltage 10007011 www.national.com 10007012 6 Line Transient Response Line Transient Response 10007003 10007004 Load Transient Response Load Transient Response 10007005 10007006 Load Transient Response Load Transient Response 10007007 10007008 7 www.national.com LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. (Continued) LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. (Continued) Output Voltage vs Input Voltage Output Voltage vs Input Voltage 10007013 10007014 Output Voltage vs Input Voltage Output Voltage vs Input Voltage 10007015 www.national.com 10007016 8 Output ShortCircuit Current Output ShortCircuit Current 10007017 10007018 Power Supply Rejection Ratio Power Supply Rejection Ratio 10007024 10007025 9 www.national.com LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. (Continued) LM3480 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 F, COUT = 0.1 F, and TA .=25C. (Continued) DC Load Regulation 10007023 www.national.com 10 inches (millimeters) SOT-23 Package 3-Lead Small-Outline Package (M3) For Ordering, Refer to Ordering Information Table NS Package Number MF03A National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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