Revision 1/21/2014

Preliminary and all contents are subject to change without prior notice.

© Seaward Electronics, Inc., 2007

• www.seawardinc.com.cn • Page 1

Features



1.3V typical dropout



Fixed 1.2V± 2% output voltage



Fast transient response



Output current limiting



Built-in thermal shutdown



Good noise rejection



Rugged 2KV ESD withstand capability.



Available in SOT223 &TO252 Packages.



Works best with inexpensive electrolytic Capcitors.



RoHS Compliant

Description

SE1122 is a low dropout positive fixed-mode regulator

with minimum of 1A output current capability. The

product

is

specifically

designed

to

provide

well-regulated supply for low voltage IC applications

such as high-speed bus termination and low current

1.2V logic supply. SE1122 is also well suited for other

applications

such

as

VGA

cards.

SE1122

is

guaranteed to have a typical 1.3V dropout at full load

current making it ideal to provide well-regulated

outputs of 1.2 output voltage with 2.7V input voltage

supply.

Pin Configuration

Tab is Vout

GND

OUT

IN

TO252

Ordering Information

Device

Package

SE1122-HF

SOT-223

(Halogen Free)

Fixed output

voltages 1.2V

SE1122-LF

TO252

(Lead free)

Application



PC peripheral



Communication

Typical Application