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

© Seaward Electronics, Inc., • www.seawardinc.com • Page

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9/4/2012

SE5120

1.5A CMOS Ultra LDO Voltage Regulator

Typical Application

General Description

The SE5120 series of fixed output ultra low

dropout linear regulators are designed for portable

battery powered applications, which require low

power consumption and low dropout voltage.

Each

device contains a bandgap voltage reference, an error

amplifier, a PMOS power transistor, and current limit

and temperature limit protection circuits.

The SE5120 is designed to work with low cost

electrolytic and ceramic capacitors and requires a

Features



Typical 150mV Dropout Voltage at 500mA.



Output Voltages：0.8V to 3.9V（0.1V Step）



Excellent Line and Load Regulation.



High Accuracy Output Voltage of 2%.



Ultra-Low Ground Current at 150

μA (Typ.)



Thermal and Over-Current Protection.



Short Circuit Protection



Standard SOT-223 and TO-252 Package.

Applications



USB removable devices



MPEG4 devices



Wireless LAN’s



Hand-Held Instrumentation.



Portable DVD players



Digital camera