| 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) | -5, -12, -15 |
| Noise (uVrms) | 400 |
| Iq (Typ) (mA) | 2 |
| Thermal resistance θJA (°C/W) | 60 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 0.1 |
| Regulated outputs (#) | 1 |
| Accuracy (%) | 4 |
| PSRR @ 100 KHz (dB) | 35 |
| Dropout voltage (Vdo) (Typ) (mV) | 1700 |
| Operating temperature range (C) | 0 to 70 |
- 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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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.
