The document describes the features and characteristics of the L79xxAC series of three-terminal negative regulators, including output current, output voltages, thermal overload protection, short circuit protection, and output transition SOA protection. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L78xxA positive standard series, they are particularly suited for split power supplies. If adequate heat sinking is provided, they can deliver over 1.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
The L79xxAC series consists of three-terminal negative voltage regulators designed for local on-card regulation and split power supply applications. Available in TO-220 and D?PAK packages, these devices offer output voltages of -5V, -12V, and -15V with an output current capability of up to 1.5 A when adequate heat sinking is provided. The series includes thermal overload, short circuit, and output transition SOA protection.
| Output current | 1.5 A |
|---|---|
| Output voltages | -5; -12; -15 V |
| Storage temperature range | -65 to 150 °C |
| Operating junction temperature range | 0 to 125 °C |
| Thermal resistance junction-ambient (TO-220) | 50 °CIW |
| Thermal resistance junction-case (D?PAK) | 3 °CIW |
| Short circuit current | 2 A |
| Short circuit peak current | 2.5 A |
The series provides fixed output voltages of -5V, -12V, and -15V.
They include thermal overload protection, short circuit protection, and output transition SOA protection.