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Preliminary

RT9179

Adjustable, 200mA LDO Regulator with Enable

General Description

The RT9179 is a high performance linear voltage regulator

with enable high function and adjustable output with a 0.8V

reference voltage. It operates from an input of 3V to 5.5V

and provides output current up to 200mA with two external

resistors to set the output voltage ranges from 1.175V to

4.5V.

The RT9179 has superior regulation over variations in line

and load. Also it provides fast respond to step changes in

load. Other features include over-current and over-

temperature protection. The device has enable pin to reduce

power consumption in shutdown mode.

The devices is available in the popular 5-lead SOT-25

package.

Features

200mV Dropout @ 200mA

150碌A(chǔ) Low Ground Pin Current

碌

Excellent Line and Load Regulation

<1碌A(chǔ) Standby Current in Shutdown Mode

碌

Guaranteed 200mA Output Current

Stable with 1

碌

F input and output ceramic capacitor

Adjustable Output Voltage Ranges from 1.175V to

4.5V

Over-Temperature/Over-Current Protection

Applications

Battery-Powered Equipment

Graphic Card

Peripheral Cards

PCMCIA Card

Ordering Information

RT9179

Package Type

B : SOT- 25

Operating Temperature Range

C : Commercial Standard

Pin Configurations

TOP VIEW

VIN

GND

1

2

3

4

ADJ

5

VOUT

Marking Information

Prat Number

RT9179CB

Marking

XA

EN

SOT-25

DS9179-00

July 2003

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