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LM79L

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100-mA, negative linear voltage regulator

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Data sheet

LM79L

ACTIVE
Data sheet Order now

Product details

Output options Fixed Output, Negative Output Iout (max) (A) 0.1 Vin (max) (V) -7 Vin (min) (V) -30 Vout (max) (V) -5 Vout (min) (V) -15 Fixed output options (V) -15, -12, -5 Rating Catalog Noise (µVrms) 400 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2 Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 1700 Operating temperature range (°C) 0 to 70
Output options Fixed Output, Negative Output Iout (max) (A) 0.1 Vin (max) (V) -7 Vin (min) (V) -30 Vout (max) (V) -5 Vout (min) (V) -15 Fixed output options (V) -15, -12, -5 Rating Catalog Noise (µVrms) 400 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 2 Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 0.1 Regulated outputs (#) 1 Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 1700 Operating temperature range (°C) 0 to 70
DSBGA (YZR) 6 2.1875 mm² 1.75 x 1.25 SOIC (D) 8 29.4 mm² 4.9 x 6 TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • Preset Output Voltage Error is Less than ±5% Over Load, Line and Temperature
  • Specified at an Output Current of 100mA
  • Easily Compensated with a Small 0.1μF 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
  • See AN-1112 (SNVA009) for DSBGA Considerations

All trademarks are the property of their respective owners.

  • Preset Output Voltage Error is Less than ±5% Over Load, Line and Temperature
  • Specified at an Output Current of 100mA
  • Easily Compensated with a Small 0.1μF 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
  • See AN-1112 (SNVA009) for DSBGA Considerations

All trademarks are the property of their respective owners.

The LM79LXXAC 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, when combined with a minimum output 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 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 package, the 8-lead SOIC package, and the 6-Bump DSBGA package.

For output voltages other than the pre-set -5V, -12V and -15V, the LM137L series provides an adjustable output voltage range from -1.2V to -47V.

The LM79LXXAC 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, when combined with a minimum output 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 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 package, the 8-lead SOIC package, and the 6-Bump DSBGA package.

For output voltages other than the pre-set -5V, -12V and -15V, the LM137L series provides an adjustable output voltage range from -1.2V to -47V.
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Technical documentation

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* Data sheet LM79LXXAC Series 3-Terminal Negative Regulators datasheet (Rev. K) 09 Apr 2013
Application note L1 and L2 EV Charger Electric Vehicle Service Equipment Design Considerations (Rev. B) 09 Jun 2021
More literature Die D/S LM79L12AC MDA 3-Terminal Negative Regulators 28 Sep 2012
Application note TO-92 Packing Options / Ordering Instructions (Rev. A) 23 Jun 2010

Design & development

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Package Pins CAD symbols, footprints & 3D models
DSBGA (YZR) 6 Ultra Librarian
SOIC (D) 8 Ultra Librarian
TO-92 (LP) 3 Ultra Librarian
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