LM79L Series 3-Terminal Negative Regulators | TI.com

LM79L (ACTIVE)

Series 3-Terminal Negative Regulators

Series 3-Terminal Negative Regulators - LM79L
Datasheet
 

Description

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.

Features

  • 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

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Output options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed output options (V)
Package Group
Features
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. price (US$)
Rating
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
LM79L
Fixed Output
Negative Output    
0.1    
-7    
-30    
-5    
-15    
-5
-12
-15    
DSBGA | 6
SOIC | 8
TO-92 | 3    
   
1    
0 to 70    
60    
400    
0.24 | 1ku    
Catalog    
Non-Ceramic    
35    
4    
1700    
2    
See datasheet (DSBGA)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
3TO-92: 19 mm2: 3.68 x 5.2 (TO-92 | 3)