Copyright

© ANPEC Electronics Corp.

Rev. A.1 - Mar., 2016

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

3A, Ultra Low Dropout (0.23V Typical) Linear Regulator

APL5934

Features

•

Ultra Low Dropout

- 0.23V(typical) at 3A Output Current

•

Low ESR Output Capacitor (Multi-layer

Chip Capacitors (MLCC)) Applicable

•

0.8V Reference Voltage

•

High Output Accuracy

-

±1.5% over Line, Load, and Temperature Range

•

Fast Transient Response

•

Adjustable Output Voltage

•

Power-On-Reset Monitoring on Both VCNTL and

VIN Pins

•

Internal Soft-Start

•

Current-Limit and Short Current-Limit Protections

•

Shutdown/Enable Control Function

•

Simple SOP-8P and TDFN3x3-10 Packages with

Exposed Pad

(RoHS Compliant)

Applications

General Description

The APL5934 is a 3A ultra low dropout linear regulator.

The IC needs two supply voltages, one is a control voltage

(V

voltage (V

pation and provide extremely low dropout voltage.

The APL5934/B integrates many functions. A Power-On-

Reset (POR) circuit monitors both supply voltages on

VCNTL and VIN pins to prevent erroneous operations.

The functions of thermal shutdown and current-limit pro-

tect the device against thermal and current over-loads. A

POK indicates the output voltage status with a delay time

set internally. It can control other converter for power

sequence. The APL5934/B can be enabled by other power

systems. Pulling and holding the EN/ENB voltage below

0.4V shut/enable off the output.

The APL5934 is available in a SOP-8P package which

features small size as SOP-8 and an Exposed Pad to

reduce the junction-to-case resistance to extend power

range of applications.

•

Front Side Bus VTT (1.2V/3A)

•

Note Book PC Applications

•

Motherboard Applications

Simplified Application Circuit

GND

VOUT

VCNTL

POK

VIN

EN

Enable

EN

POK

APL5934/C

FB

Optional

GND

VOUT

VCNTL

POK

VIN

ENB

Enable

ENB

POK

APL5934B/D

FB

Optional