Revision 12/5/2008

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

© Seaward Electronics, Inc., 2006. • www.seawardinc.com.cn • Page 1

SE5168

150mA CMOS LDO Regulator

Description

The SE5168 series of fixed output low dropout

linear regulators are designed for portable battery

powered applications, which require low dropout

voltage and low ground current.

Each device

contains a voltage reference unit, an error amplifier,

a PMOS power transistor, and resistors for setting

output voltage, and current limit and temperature

limit protection circuits.

The SE5168 has been designed to be used

with low cost capacitors and requires a minimum

output capacitor of 1.0μF. Standard voltage versions

are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.

Features

Typical Low Dropout Voltage of 200mV at

75mA.

Guaranteed 150mA output over the full

operating temperature range.

Excellent Line and Load Regulation.

High Accuracy Output Voltage of 2%.

Typical Low Ground Current at 50μA

Current Limiting and Thermal Protection.

Standard SOT-23-3L, TO-92, and SC70

(SOT-323-3L) Package.

Applications

Cellphones.

Wireless LAN’s.

Hand-Held Instrumentation.

Portable Video Game Devices.

Digital Cameras.

Ordering/Marking Information

Package

Ordering Information

Marking Information

3.3V

SE5168AHN

SE5168AHN

YYWW

2.8V

SE5168BHN

SE5168BHN

YYWW

2.5V

SE5168CHN

SE5168CHN

YYWW

1.8V

SE5168DHN

SE5168DHN

YYWW

1.5V

SE5168EHN

SE5168EHN

YYWW

3.0V

SE5168FHN

SE5168FHN

YYWW

3.3V

SE5168AHG

SE5168AHG

YYWW

2.8V

SE5168BHG

SE5168BHG

YYWW

2.5V

SE5168CHG

SE5168CHG

YYWW

1.8V

SE5168DHG

SE5168DHG

YYWW

1.5V

SE5168EHG

SE5168EHG

YYWW

3.0V

SE5168FHG

SE5168FHG

YYWW

YY: year code

WW: week code.