© 2009 Semtech Corporation

POWER MANAGEMENT

1

SC4215A

Very Low Input /Very Low Dropout

2 Amp Regulator With Enable

Features

Input Voltage as low as 1.4V

400mV dropout @ 2A

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 SC4215A is a high performance positive voltage regu-

lator designed for use in applications requiring very low

input voltage and very low dropout voltage at up to 2

amperes. It operates with a Vin as low as 1.4V, with output

voltage programmable as low as 0.5V. The SC4215A fea-

tures ultra low dropout, ideal for applications where Vout

is very close to Vin. Additionally, the SC4215A has an

enable pin to further reduce power dissipation while shut-

down. The SC4215A provides excellent regulation over

variations in line, load and temperature.

The SC4215A 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