LM320L/LM79LXXAC Series 3-Terminal Negative Regulators General Description The LM320L/LM79LXXAC 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. The LM320L/LM79LXXAC series also includes, as selfprotection 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, 8-lead SOIC package, and the 6-Bump micro SMD 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 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 n See AN-1112 for micro SMD considerations Typical Applications Adjustable Output Regulator Fixed Output Regulator 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. 00774803 −V0 = −5V − (5V/R1 + IQ) • R2, 5V/R1 > 3 IQ Connection Diagrams 6-Bump micro SMD TO-92 Plastic Package (Z) 00774802 Bottom View 00774820 Bump Side Down © 2006 National Semiconductor Corporation DS007748 www.national.com LM320L/LM79LXXAC Series 3-Terminal Negative Regulators March 2006 LM320L/LM79LXXAC Connection Diagrams (Continued) SO-8 Plastic (Narrow Body) 00774804 Top View Ordering Information Package Part Number Package Marking Transport Media NSC Drawing 8-Lead SOIC LM79L05ACM LM79L05ACM 95 Units/Rail M08A LM79L05ACMX LM79L12ACM 2.5k Units Tape and Reel LM79L12ACM 95 Units/Rail LM79L12ACMX LM79L15ACM 2.5k Units Tape and Reel LM79L15ACM 95 Units/Rail LM79L15ACMX 3-Pin TO-92 6-Bump micro SMD www.national.com 2.5k Units Tape and Reel LM79L05ACZ 320L79L05 1800 Units Per Box LM79L12ACZ 320L79L12 1800 Units Per Box LM79L15ACZ 320L79L15 1800 Units Per Box LM79L15ACTL XTPB 250 Units Tape and Reel LM79L05ACTLX 3k Units Tape and Reel 2 Z03A TLA06AMA Operating Temperature Range If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Junction Temperature 0˚C to +70˚C +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 Units Conditions (−20 ≤ VIN ≤ −7.5) −5.25 −4.75 −11.4 (−27 ≤ VIN ≤ −14.5) 60 45 (−20 ≤ VIN ≤ −7.3) (−27 ≤ VIN ≤ −14.6) TJ = 25˚C, IO = 40mA VMIN ≤ VIN ≤ VMAX −12.6 (−20 ≤ VIN ≤ −7) TJ = 25˚C, IO = 100mA VMIN ≤ VIN ≤ VMAX (−27 ≤ VIN ≤ −14.8) −14.25 (−30 ≤ VIN ≤ −18) −15.75 V −14.25 (−30 ≤ VIN ≤ −17.5) 45 (−30 ≤ VIN ≤ −17.7) 60 45 (−20 ≤ VIN ≤ −7) (−27 ≤ VIN ≤ −14.5) (−30 ≤ VIN ≤ −17.5) 45 50 100 125 mV V mV V ∆VO Load Regulation ∆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 TJ = 25˚C mV 1mA ≤ IO ≤ 100mA 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. 3 www.national.com LM320L/LM79LXXAC Absolute Maximum Ratings (Note 1) LM320L/LM79LXXAC 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 www.national.com 00774816 4 LM320L/LM79LXXAC Typical Performance Characteristics (Continued) Quiescent Current Output Impedance 00774817 00774818 Typical Applications ± 15V, 100mA Dual Power Supply 00774806 5 www.national.com LM320L/LM79LXXAC Schematic Diagrams −5V 00774809 −12V and −15V 00774810 www.national.com 6 LM320L/LM79LXXAC Physical Dimensions inches (millimeters) unless otherwise noted SOIC Package (M) NS Package Number M08A Molded Offset TO-92 (Z) NS Package Number Z03A 7 www.national.com LM320L/LM79LXXAC Series 3-Terminal Negative Regulators Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING. 2. 63Sn/67Pb EUTECTIC BUMP. 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. 5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE HEIGHT. 6. REFERENCE JEEC REGISTRATION MO-211, VARIATION BC. 6-Bump micro SMD NS Package Number TLA06AMA X1 = 1006µm X2 = 1793µm X3 = 600µm 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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