79L12 Datasheet | Texas Instruments

FEATURES - 2 Preset Output Voltage Error is Less than ±5% Over Load, Line and Temperature - Specified at an Output Current of 100m A - Easily pensated 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/m A - See AN-1112 (SNVA009) for DSBGA Considerations 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 100m A. These devices were designed using the latest puter techniques for optimizing the packaged IC thermal/electrical performance. The LM79LXXAC series, when bined 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/m A. The 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 bined 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. Typical Applications - 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. Figure 1. Fixed Output Regulator - V0 = - 5V - (5V/R1 + IQ) - R2, 5V/R1 > 3 IQ Figure...