LM320L, LM79LXXAC Series 3-Terminal Negative Regulators General Description The LM320L/LM79LXXAC series of 3-terminal negative voltage regulators features fixed output voltages of b5V, b 12V, and b 15V with output current capabilities in excess of 100 mA. These devices were designed using the latest computer techniques for optimizing the packaged IC thermal/electrical performance. The LM79LXXAC series, even when combined with a minimum output compensation capacitor of 0.1 mF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA. The LM320L/LM79LXXAC series also includes, as self-protection circuitry: safe operating area circuitry for output transistor power dissipation limiting, a temperature independent short circuit current limit for peak output current limiting, and a thermal shutdown circuit to prevent excessive junction temperature. Although designed primarily as fixed voltage regulators, these devices may be combined with simple external circuitry for boosted and/or adjustable voltages and currents. The LM79LXXAC series is available in the 3-lead TO-92 package, and SO-8; 8 lead package. The LM320L series is available in the 3-lead TO-92 package. For output voltage other than b5V, b12V and b15V the LM137L series provides an output voltage range from 1.2V to 47V. Typical Applications Connection Diagrams Fixed Output Regulator Features Y Y Y Y Y Y Y Preset output voltage error is less than g 5% overload, line and temperature Specified at an output current of 100 mA Easily compensated with a small 0.1 mF output capacitor Internal short-circuit, thermal and safe operating area protection Easily adjustable to higher output voltages Maximum line regulation less than 0.07% VOUT/V Maximum load regulation less than 0.01% VOUT/mA SO-8 Plastic (Narrow Body) TL/H/7748 – 4 TL/H/7748 – 1 *Required if the regulator is located far from the power supply filter. A 1 mF aluminum electrolytic may be substituted. **Required for stability. A 1 mF aluminum electrolytic may be substituted. Top View Order Number LM79L05ACM, LM79L12ACM or LM79L15ACM See NS Package Number M08A TO-92 Plastic Package (Z) Adjustable Output Regulator TL/H/7748 – 2 Bottom View TL/H/7748 – 3 b VO e b 5V b (5V/R1 a IQ) 5V/R1 l 3 IQ C1995 National Semiconductor Corporation TL/H/7748 # R2, Order Number LM320LZ-5.0, LM79L05ACZ, LM320LZ-12, LM79L12ACZ, LM320LZ-15 or LM79L15ACZ See NS Package Number Z03A RRD-B30M115/Printed in U. S. A. LM320L,LM79LXXAC Series 3-Terminal Negative Regulators February 1995 Absolute Maximum Ratings Operating Temperature Range If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Input Voltage VO e b5V, b12V, b15V a 125§ C Storage Temperature Range Lead Temperature (Soldering, 10 sec.) b 35V Internal Power Dissipation (Note 1) 0§ C to a 70§ C Maximum Junction Temperature b 55§ C to a 150§ C 260§ C Internally Limited Electrical Characteristics (Note 2) TA e 0§ C to a 70§ C unless otherwise noted. Output Voltage b 5V b 12V b 15V Input Voltage (unless otherwise noted) b 10V b 17V b 20V Symbol VO DVO Parameter Output Voltage Line Regulation Conditions Min Tj e 25§ C, IO e 100 mA b5.2 Typ Max Min b5 b 4.8 b 12.5 Typ b 12 Max Min Typ Units Max b 11.5 b 15.6 b 15 b 14.4 1 mA s IO s 100 mA VMIN s VIN s VMAX b 5.25 b 4.75 b 12.6 b 11.4 b 15.75 b 14.25 (b20 s VIN s b7.5) (b27 s VIN s b14.8) (b30 s VIN s b18) 1 mA s IO s 40 mA VMIN s VIN s VMAX b 5.25 b 4.75 b 12.6 b 11.4 b 15.75 b 14.25 (b20 s VIN s b7) (b27 s VIN s b14.5) (b30 s VIN s b17.5) V Tj e 25§ C, IO e 100 mA 60 45 45 VMIN s VIN s VMAX (b20 s VIN s b7.3) (b27 s VIN s b14.6) (b30 s VIN s b17.7) mV V Tj e 25§ C, IO e 40 mA VMIN s VIN s VMAX mV V 60 45 45 (b20 s VIN s b7) (b27 s VIN s b14.5) (b30 s VIN s b17.5) DVO Load Regulation Tj e 25§ C 1 mA s IO s 100 mA DVO Long Term Stability IO e 100 mA 20 IQ Quiescent Current IO e 100 mA 2 DIQ Quiescent Current Change 1 mA s IO s 100 mA 0.3 0.3 0.3 1 mA s IO s 40 mA 0.1 0.1 0.1 0.25 0.25 0.25 50 IO e 100 mA VMIN s VIN s VMAX Vn Output Noise Voltage Tj e 25§ C, IO e 100 mA f e 10 Hz b 10 kHz DVIN DVO Ripple Rejection Tj e 25§ C, IO e 100 mA f e 120 Hz Input Voltage Required to Maintain Line Regulation Tj e 25§ C, IO e 100 mA IO e 40 mA 100 125 48 6 2 60 6 2 mV mV/khrs 6 (b20 s VIN s b7.5) (b27 s VIN s b14.8) (b30 s VIN s b18) 40 96 50 120 52 b 7.3 b 7.0 2 mA V dB b 17.7 b 17.5 Note 1: Thermal resistance of Z package is 60§ C/W ijc, 232§ C/W ija at still air, and 88§ C/W at 400 ft/min of air. The M package ija is 180§ C/W in still air. The maximum junction temperature shall not exceed 125§ C on electrical parameters. Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used. mA mV 50 b 14.6 b 14.5 mA V V Typical Performance Characteristics Maximum Average Power Dissipation (TO-92) Dropout Voltage Peak Output Current Short Circuit Output Current Ripple Rejection Output Voltage vs. Temperature (Normalized to 1V @ 25§ C) Quiescent Current Output Impedance TL/H/7748 – 5 Typical Applications (Continued) g 15V, 100 mA Dual Power Supply TL/H/7748 – 6 3 Schematic Diagrams b 5V TL/H/7748 – 9 b 12V and b 15V TL/H/7748 – 10 4 Physical Dimensions inches (millimeters) S.O. Package (M) Order Number LM79L05ACM, LM79L12ACM or LM79L15ACM NS Package Number M08A 5 LM320L,LM79LXXAC Series 3-Terminal Negative Regulators Physical Dimensions inches (millimeters) (Continued) Molded Offset TO-92 (Z) Order Number LM320LZ-5.0, LM79L05ACZ, LM320LZ-12, LM79L12ACZ, LM320LZ-15 or LM79L15ACZ NS Package Number Z03A 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 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. 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