IN

VBG

+

GND

OUT

VIH

+

CAP

LP3992

HI = ON

LOW = OFF

Fast

Turnoff

Current Limit

Thermal Limit

SD

EN

LP3992

SNVS192C – OCTOBER 2002 – REVISED NOVEMBER 2015

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8 Detailed Description

8.1 Overview

The LP3992 device is a CMOS voltage regulator with a low-input operating-voltage tolerance. Key protection

circuits, including thermal-overload and short-circuit protection, are integrated in the device. Using the EN pin,

the device may be controlled to provide a SHUTDOWN state, in which negligible supply current is drawn. The

LP3992 is designed to be stable with space-saving ceramic capacitors.

8.2 Functional Block Diagram

10

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