© 2009 Semtech Corporation

POWER MANAGEMENT

1

SC4216

Very Low Input /Very Low Dropout

3 Amp Regulator With Enable

Features

Input Voltage as low as 1.45V

500mV dropout @ 3A

Adjustable output from 0.5V to 3.8V

Over current and over temperature protection

Enable pin

10µA quiescent current in shutdown

Full industrial temperature range

Available in SOIC-8-EDP Lead-free package, fully WEEE

and RoHS compliant

Applications

Telecom/Networking cards

Motherboards/Peripheral cards

Industrial applications

Wireless infrastructure

Set top boxes

Medical equipment

Notebook computers

Battery powered systems

Description

The SC4216 is a high performance positive voltage regula-

tor designed for use in applications requiring very low

input voltage and very low dropout voltage at up to 3

amperes. It operates with a Vin as low as 1.45V, with output

voltage programmable as low as 0.5V. The SC4216 features

ultra low dropout, ideal for applications where Vout is very

close to Vin. Additionally, the SC4216 has an enable pin to

further reduce power dissipation while shut- down. The

SC4216 provides excellent regulation over variations in

line, load and temperature.

The SC4216 is available in the SOIC-8-EDP (Exposed Die

Pad) package. The output voltage can be set via an exter-

nal divider or to xed settings of 0.5V and 1.2V depending

on how the FB pin is con gured.

Typical Application Circuit

January 28, 2009