LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF General Description Key Specifications The LM3490 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 LM3490 is the 5-lead SOT-23 package. A logic-controlled ON/OFF feature makes the LM3490 ideal for powering subsystems ON and OFF as needed. The 5, 12, and 15V members of the LM3490 series are intended as tiny alternatives to industry standard LM78LXX series and similar devices. The 1.2V quasi low dropout of LM3490 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 LM3490 series features a 3.3V member. The SOT packaging and quasi low dropout features of the LM3490 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. n 30V maximum input for operation n 1.2V guaranteed maximum dropout over full load and temperature ranges n 100 mA guaranteed load current n ± 5% guaranteed output voltage tolerance over full load and temperature ranges n −40 to +125˚C junction temperature range for operation Features n 3.3, 5, 12, and 15V versions available n Logic-controlled ON/OFF n Packaged in the tiny 5-lead SOT-23 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 DS100071-2 Connection Diagram DS100071-1 Top View SOT-23 Package 5-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package Package Code MA05B(Note 1) © 1999 National Semiconductor Corporation DS100071 www.national.com LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF June 1999 Ordering Information Output Voltage (V) Order Number (Note 2) Package Marking (Note 3) Comments 3.3 LM3490IM5-3.3 L78B 250 Units on Tape and Reel 3.3 LM3490IM5X-3.3 L78B 3k Units on Tape and Reel 5 LM3490IM5-5.0 L79B 250 Units on Tape and Reel 5 LM3490IM5X-5.0 L79B 3k Units on Tape and Reel 12 LM3490IM5-12 L80B 250 Units on Tape and Reel 12 LM3490IM5X-12 L80B 3k Units on Tape and Reel 15 LM3490IM5-15 L81B 250 Units on Tape and Reel 15 LM3490IM5X-15 L81B 3k Units on Tape and Reel www.national.com 2 Absolute Maximum Ratings (Note 4) ESD (Note 7) ON/OFF All Other Pins If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (IN to GND) Operating Ratings (Note 4) 35V Voltage ON/OFF to GND Maximum Input Voltage (IN to GND) 5.5V Power Dissipation (Note 5) 1.0kV 2.0kV 400 mW Voltage ON/OFF to GND +150˚C Junction Temperature (TJ) Junction Temp. (TJ) (Note 5) Ambient Storage Temp. −65 to +150˚C Soldering Time, Temp. (Note 6) Wave Infrared Vapor Phase 4sec., 260˚C 10sec., 240˚C 75sec., 219˚C 30V 0 to 5V −40 to +125˚C Maximum Power Dissipation (Note 8) 300 mW Electrical Characteristics LM3490-3.3, LM3490-5.0 VIN = VNOM + 1.5V unless otherwise noted. Typicals and limits appearing in normal type apply for TA = TJ = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40 to +125˚C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT Parameter Output Voltage 3.3V Conditions Typical 1 mA ≤ IOUT ≤ 100 mA 5.0V Limit 3.30 Typical 5.00 3.17 3.14 3.43 3.46 ∆VOUT ∆VOUT Line Regulation Load Regulation VNOM + 1.5V ≤ VIN ≤ 30V, IOUT = 1 mA 7 10 mA ≤ IOUT ≤ 100 mA 15 Ground Pin Current VNOM + 1.5V ≤ VIN ≤ 30V, No Load VON/OFF = 5V 0.1 Dropout Voltage IOUT = 10 mA 0.7 0.9 mV mV(max) 4 mA(max) 5 µA(max) 0.9 1.0 V V(max) V(max) 1.1 1.2 V V(max) V(max) mA µA 0.9 1.1 1.2 VIN = 10V, Bandwidth: 10 Hz to 100 kHz 40 0.7 0.9 1.0 IOUT = 100 mA mV mV(max) 0.1 5 VIN VOUT 25 2 4 VON/OFF = 0V V V(min) V(min) V(max) V(max) 15 2 Units 4.80 4.75 5.20 5.25 9 25 40 IGND Limit en Output Noise Voltage VIL Maximum Low Level Input Voltage at ON/OFF 0.2 0.2 V(max) VIH Minimum High Level Input Voltage at ON/OFF 2.0 2.0 V(min) −1 µA(max) 20 µA(max) IIL IIH 100 VON/OFF = 0V VON/OFF = 5V 150 −1 1 1 20 3 µVrms µA www.national.com LM3490-12, LM3490-15 VIN = VNOM + 1.5V unless otherwise noted. Typicals and limits appearing in normal type apply for TA = TJ = 25˚C. Limits appearing in boldface type apply over the entire junction temperature range for operation, −40 to +125˚C. (Notes 9, 10, 11) Nominal Output Voltage (VNOM) Symbol VOUT Parameter Output Voltage 12V Conditions Typical 1 mA ≤ IOUT ≤ 100 mA 15V Limit 12.00 Typical 15.00 11.52 11.40 12.48 12.60 ∆VOUT ∆VOUT Line Regulation Load Regulation VNOM + 1.5V ≤ VIN ≤ 30V, IOUT = 1 mA 14 10 mA ≤ IOUT ≤ 100 mA 36 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(max) 5 µA(max) 0.9 1.0 V V(max) V(max) 1.1 1.2 V V(max) V(max) 16 40 45 60 IGND Ground Pin Current VNOM + 1.5V ≤ VIN ≤ 30V, No Load VON/OFF = 5V 2 2 4 VON/OFF = 0V 0.1 Dropout Voltage IOUT = 10 mA 0.7 0.9 0.9 1.1 1.2 VIN = 10V, Bandwidth: 10 Hz to 100 kHz µA 0.7 0.9 1.0 IOUT = 100 mA mA 0.1 5 VIN VOUT Units Limit en Output Noise Voltage VIL Maximum Low Level Input Voltage at ON/OFF 0.2 0.2 V(max) VIH Minimum High Level Input Voltage at ON/OFF 2.0 2.0 V(min) −1 µA(max) 20 µA(max) IIL IIH 360 VON/OFF = 0V VON/OFF = 5V 450 −1 1 µVrms 1 20 µA Note 1: The package code MA05B 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 +125˚C. The suffix “M5” indicates the die is packaged in the 5-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)/θJA where TJ is the junction temperature, TA is the ambient temperature, and θJA is the junction-to-ambient thermal resistance. The 400 mW rating results from substituting the Absolute Maximum junction temperature, 150˚C, for TJ , 50˚C for TA, and 250˚C/W for θJA. 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 4 mW for each ˚C below 50˚C ambient. It must be derated by 4 mW for each ˚C above 50˚C ambient. A θJA of 250˚C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sinking enables the safe dissipation of more power. The LM3490 actively limits its junction temperature to about 150˚C. 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 kΩ resistor. Note 8: As with the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 300 mW rating appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125˚C, for TJ, 50˚C for TA, and 250˚C/W for θJA in P = (TJ − TA)/θJA. 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 4 mW for each ˚C below 50˚C ambient. It must be derated by 4 mW for each ˚C above 50˚C ambient. A θJA of 250˚C/W represents the worst-case condition of no heat sinking of the 5-lead plastic SOT-23 package. Heat sinking enables the dissipation of more power during operation. www.national.com 4 LM3490-12, LM3490-15 (Continued) Note 9: A typical is the center of characterization data taken with TA = TJ = 25˚C. Typicals are not guaranteed. Note 10: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with TA = TJ = 25˚C. 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. 5 www.national.com Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 µF, COUT = 0.1 µF, and TA . = 25˚C. Dropout Voltage vs Load Current Dropout Voltage vs Junction Temperature DS100071-19 Ground Pin Current vs Input Voltage DS100071-20 Ground Pin Current vs Input Voltage DS100071-9 Ground Pin Current vs Load Current DS100071-10 Ground Pin Current vs Junction Temperature DS100071-21 www.national.com DS100071-22 6 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 µF, COUT = 0.1 µF, and TA . = 25˚C. (Continued) Input Current vs Input Voltage Input Current vs Input Voltage DS100071-11 Line Transient Response DS100071-12 Line Transient Response DS100071-3 Load Transient Response DS100071-4 Load Transient Response DS100071-5 DS100071-6 7 www.national.com Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 µF, COUT = 0.1 µF, and TA . = 25˚C. (Continued) Load Transient Response Load Transient Response DS100071-7 Output Voltage vs Input Voltage DS100071-8 Output Voltage vs Input Voltage DS100071-13 Output Voltage vs Input Voltage DS100071-14 Output Voltage vs Input Voltage DS100071-15 www.national.com DS100071-16 8 Typical Performance Characteristics Unless indicated otherwise, VIN = VNOM + 1.5V, CIN = 0.1 µF, COUT = 0.1 µF, and TA . = 25˚C. (Continued) Output ShortCircuit Current Output ShortCircuit Current DS100071-17 Power Supply Rejection Ratio DS100071-18 Power Supply Rejection Ratio DS100071-24 DS100071-25 DC Load Regulation DS100071-23 9 www.national.com LM3490 100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator with Logic-Controlled ON/OFF Physical Dimensions inches (millimeters) unless otherwise noted SOT-23 Package 5-Lead Small-Outline Package (M5) For Ordering, Refer to Ordering Information Table NS Package Number MA05B 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. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: [email protected] National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 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.