LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators General Description The LM320L/LM79LXXAC/LM13121 dual marked series of 3-terminal negative voltage regulators features fixed output voltages of −5V, −12V, and −15V with output current capabilities in excess of 100mA. 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 0.1µF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA. ages 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 −5V, −12V and −15V, the LM137L series provides an output voltage range from 1.2V to 47V. Features The LM320L/LM79LXXAC/LM13121 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 volt- n Preset output voltage error is less than ± 5% overload, line and temperature n Specified at an output current of 100mA n Easily compensated with a small 0.1µF output capacitor n Internal short-circuit, thermal and safe operating area protection n Easily adjustable to higher output voltages n Maximum line regulation less than 0.07% VOUT/V n Maximum load regulation less than 0.01% VOUT/mA Typical Applications Connection Diagrams Fixed Output Regulator SO-8 Plastic (Narrow Body) 00774804 00774801 *Required if the regulator is located far from the power supply filter. A 1µF aluminum electrolytic may be substituted. **Required for stability. A 1µF aluminum electrolytic may be substituted. Adjustable Output Regulator Top View Order Number LM79L05ACM, LM79L12ACM LM79L15ACM, LM79L05ACMX, LM79L12ACMX or LM79L15ACMX See NS Package Number M08A TO-92 Plastic Package (Z) 00774802 00774803 −V0 = −5V − (5V/R1 + IQ) • R2, 5V/R1 > 3 IQ © 2002 National Semiconductor Corporation DS007748 Bottom View Order Number LM320LZ-5.0, LM79L05ACZ, LM320LZ-12, LM79L12ACZ, LM320LZ-15 or LM79L15ACZ, LM13121Z-12, LM13121Z-15, LM13121Z-5.0 See NS Package Number Z03A www.national.com LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators September 2002 LM320L/LM79LXXAC/LM13121 Absolute Maximum Ratings (Note 1) Operating Temperature Range 0˚C to +70˚C Maximum Junction Temperature If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. +125˚C Storage Temperature Range −55˚C to +150˚C Lead Temperature Input Voltage (Soldering, 10 sec.) VO = −5V, −12V, −15V 260˚C −35V Internal Power Dissipation (Note 2) Internally Limited Electrical Characteristics (Note 3) TA = 0˚C to +70˚C unless otherwise noted. Output Voltage −5V −12V −15V Input Voltage (unless otherwise noted) −10V −17V −20V Symbol VO Parameter Output Voltage Min Typ Max Min Typ Max Min Typ Max TJ = 25˚C, IO = 100mA −5.2 −5 −4.8 −12.5 −12 −11.5 −15.6 −15 −14.4 1mA ≤ IO ≤ 100mA −5.25 −4.75 −12.6 −11.4 −15.75 VMIN ≤ VIN ≤ VMAX 1mA ≤ IO ≤ 40mA VMIN ≤ VIN ≤ VMAX ∆VO Line Regulation (−20 ≤ VIN ≤ −7.5) −5.25 −4.75 Load Regulation −12.6 −11.4 (−27 ≤ VIN ≤ −14.5) 60 45 (−20 ≤ VIN ≤ −7.3) (−27 ≤ VIN ≤ −14.6) TJ = 25˚C, IO = 40mA VMIN ≤ VIN ≤ VMAX (−27 ≤ VIN ≤ −14.8) (−20 ≤ VIN ≤ −7) TJ = 25˚C, IO = 100mA VMIN ≤ VIN ≤ VMAX ∆VO Units Conditions −14.25 (−30 ≤ VIN ≤ −18) −15.75 (−30 ≤ VIN ≤ −17.5) 45 (−30 ≤ VIN ≤ −17.7) 60 45 (−20 ≤ VIN ≤ −7) (−27 ≤ VIN ≤ −14.5) (−30 ≤ VIN ≤ −17.5) 50 100 125 TJ = 25˚C V −14.25 45 mV V mV V mV 1mA ≤ IO ≤ 100mA ∆VO Long Term Stability IO = 100mA 20 IQ Quiescent Current IO = 100mA 2 ∆IQ Quiescent Current 1mA ≤ IO ≤ 100mA Change 1mA ≤ IO ≤ 40mA 0.1 0.1 0.1 mA IO = 100mA 0.25 0.25 0.25 mA (−20 ≤ VIN ≤ −7.5) (−27 ≤ VIN ≤ −14.8) (−30 ≤ VIN ≤ −18) V 40 96 120 µV VMIN ≤ VIN ≤ VMAX Vn 48 6 2 0.3 Output Noise TJ = 25˚C, IO = 100mA Voltage 60 6 2 0.3 mV/khrs 6 mA 0.3 f = 10Hz − 10kHz Ripple Rejection TJ = 25˚C, IO = 100mA 50 52 50 dB f = 120Hz Input Voltage TJ = 25˚C, IO = 100mA −7.3 −14.6 −17.7 V Required to −7.0 −14.5 −17.5 V IO = 40mA Maintain Line Regulation Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Note 2: Thermal resistance of Z package is 60˚C/W θJC, 232˚C/W θJA at still air, and 88˚C/W at 400 ft/min of air. The M package θJA is 180˚C/W in still air. The maximum junction temperature shall not exceed 125˚C on electrical parameters. Note 3: To ensure constant junction temperature, low duty cycle pulse testing is used. www.national.com 2 LM320L/LM79LXXAC/LM13121 Typical Performance Characteristics Maximum Average Power Dissipation (TO-92) Peak Output Current 00774811 00774812 Short Circuit Output Current Dropout Voltage 00774813 00774814 Output Voltage vs. Temperature (Normalized to 1V @ 25˚C) Ripple Rejection 00774815 00774816 3 www.national.com LM320L/LM79LXXAC/LM13121 Typical Performance Characteristics (Continued) Quiescent Current Output Impedance 00774817 00774818 Typical Applications ± 15V, 100mA Dual Power Supply 00774806 www.national.com 4 LM320L/LM79LXXAC/LM13121 Schematic Diagrams −5V 00774809 −12V and −15V 00774810 5 www.national.com LM320L/LM79LXXAC/LM13121 Physical Dimensions inches (millimeters) unless otherwise noted S.O. Package (M) Order Number LM79L05ACM, LM79L12ACM, LM79L15ACM, LM79L05ACMX, LM79L12ACMX, or LM79L15ACMX NS Package Number M08A Molded Offset TO-92 (Z) Order Number LM320LZ-5.0, LM79L05ACZ, LM320LZ-12, LM79L12ACZ, LM320LZ-15 or LM79L15ACZ, LM13121Z-12, LM13121Z-15, LM13121Z-5.0 NS Package Number Z03A www.national.com 6 LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators Notes 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 Email: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 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.