This document describes the features and characteristics of the L79xxC negative voltage regulators, which were in full production in May 2012. These regulators have an output current of up to 1.5 A and output voltages of -5V, -8V, -12V, and -15V. They also provide thermal overload protection, short circuit protection, and output transition SOA protection.
The L79xxC series of three-terminal negative voltage regulators is available in TO-220, TO-220FP, and D²PAK packages with several fixed output voltages. These regulators are designed for local on-card regulation and are particularly suited for split power supplies, offering the same voltage options as the L78xx positive standard series.
If adequate heat sinking is provided, these devices can deliver over 1.5 A of output current. Although primarily designed as fixed voltage regulators, they can be used with external components to obtain adjustable voltages and currents. Key features include thermal overload protection, short circuit protection, and output transition SOA protection.
| Output current | up to 1.5 A |
|---|---|
| Output voltages | - 5; - 8; - 12; - 15 V |
| Storage temperature range | -65 to 150 °C |
| Operating junction temperature range | 0 to 150 °C |
| Thermal resistance junction-case (TO-220) | 5 °C/W |
| Thermal resistance junction-ambient (TO-220) | 50 °C/W |
| Short circuit current (L7905C) | 2.1 A |
| Short circuit current (L7908C) | 1.5 A |
| Short circuit current (L7912C) | 1.5 A |
| Short circuit current (L7915C) | 1.3 A |
The series is available with output voltages of - 5 V, - 8 V, - 12 V, and - 15 V.
The devices include thermal overload protection, short circuit protection, and output transition SOA protection.
The regulators are available in TO-220, TO-220FP, and D²PAK packages.