RT9167/A

1

DS9167/A-26 March 2007

www.richtek.com

Pin Configurations

Low-Noise, Fixed Output Voltage,300mA/500mA LDO Regulator

Ordering Information

(TOP VIEW)

General Description

The RT9167/A is a 300mA/500mA low dropout and low

noise micropower regulator suitable for portable

applications. The output voltages range from 1.5V to 5.0V

in 100mV increments and 2% accuracy. The RT9167/A is

designed for use with very low ESR capacitors. The output

remains stable even with 1

μF ceramic output capacitor.

which does not cause extra GND current in heavy load

and dropout conditions. The shutdown mode of nearly zero

operation current makes the IC suitable for battery-powered

devices. Other features include a reference bypass pin to

improve low noise performance, current limiting, and over

temperature protection.

Marking Information

For marking information, contact our sales representative

directly or through a RichTek distributor located in your

area, otherwise visit our website for detail.

Features

Stable with Low-ESR Output Capacitor

Low Dropout Voltage (350mV @ 300mA)

Low Operation Current

−−−−−80μμμμμA Typical

Shutdown Function

Low Noise Output

Low Temperature Coefficient

Current and Thermal Limiting

Custom Voltage Available

RoHS Compliant and 100% Lead (Pb)-Free

Applications

Cellular Telephones

Laptop, Notebook, and Palmtop Computers

Battery-powered Equipment

Hand-held Equipment

SOP-8

EN

VIN

VOUT

BP

GND

GND

GND

GND

2

3

4

5

6

7

8

Note :

RichTek Pb-free and Green products are :

RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Suitable for use in SnPb or Pb-free soldering processes.

100%matte tin (Sn) plating.

VOUT

GND

VIN

EN

BP

2

3

5

4

1

VIN

GND

EN

BP

VOUT

2

3

5

4

1

SOT-23-5

RT9167/A-

Package Type

B : SOT-23-5

BR : SOT-23-5 (R-Type)

S : SOP-8

Output Voltage

15 : 1.5V

16 : 1.6V

:

49 : 4.9V

50 : 5.0V

2H : 2.85V

500mA Output Current

300mA Output Current

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)