ACE1117H

1A Bipolar Linear Regulator

VER 1.2

5

Block Diagram

Detailed Description

ACE1117H is a series of low dropout voltage, three terminal regulators. Its application circuit is very

simple: the fixed version only needs two capacitors and the adjustable version only needs two resistors

and two capacitors to work. It is composed of some modules including start-up circuit, bias circuit,

bandgap, thermal shutdown, current limit, power transistors and its driver circuit and so on.

The thermal shut down modules can assure chip and its application system working safety when the

junction temperature is larger than 140℃.

The bandgap module provides stable reference voltage, whose temperature coefficient is compensated

by careful design considerations. The temperature coefficient is under 100ppm/℃. And the accuracy of

output voltage is guaranteed by trimming technique.