This document describes CS8135, a low dropout, high current, dual 5V linear regulator. It features two adjustable output voltages, with the primary output at 5V and the standby output at 5V/10mA. The CS8135 has low dropout voltage, ON/OFF control option, low quiescent drain, RESET option, and various protection features.
The CS8135 dual regulator provides two regulated 5 V outputs: a high‑current primary output (5 V ± 5 % at 500 mA) and a low‑current standby output (5 V ± 5 % at 10 mA). It operates from a wide input range up to 26 V and includes protection features such as reverse‑battery, load‑dump, short‑circuit, thermal shutdown and over‑voltage shutdown. The device is supplied in a 5‑lead TO‑220 package with optional /ENABLE and RESET pins.
Typical applications include automotive systems where the standby output powers memory circuits during transients, while the primary output can be disabled via the /ENABLE pin. The datasheet details electrical characteristics, package dimensions, thermal data, and application‑note guidance for selecting output capacitors and ensuring stability under temperature extremes.
| Primary Output Voltage | 5 V ± 5 % (500 mA) |
|---|---|
| Standby Output Voltage | 5 V ± 5 % (10 mA) |
| Dropout Voltage (500 mA) | 0.35 V typical |
| Quiescent Current | < 3 mA |
| Maximum Input Voltage | 26 V |
The quiescent current is less than 3 mA.
The /ENABLE pin goes low whenever VOUT1 becomes unregulated and can be used as a reset flag.