RT9167/A
Low-Noise, Fixed Output Voltage,300mA/500mA LDO Regulator
General Description
Features
z Stable with Low-ESR Output Capacitor
z Low Dropout Voltage (350mV @ 300mA)
z Low Operation Current −80μA Typical
z Shutdown Function
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/Ais
designed for use with very low ESR capacitors. The output
remains stable even with 1μF ceramic output capacitor.
z Low Noise Output
z Low Temperature Coefficient
z Current and Thermal Limiting
z Custom Voltage Available
The RT9167/Auses an internal PMOS as the pass device,
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.
z SOT-23-5 and SOP-8 Packages
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Cellular Telephones
z Laptop,Notebook, and Palmtop Computers
z Battery-powered Equipment
z Hand-held Equipment
Ordering Information
RT9167/A-
Package Type
B : SOT-23-5
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.
BR : SOT-23-5 (R-Type)
S : SOP-8
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-Pin Configurations
cial Standard)
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
2H : 2.85V
(TOP VIEW)
VOUT
BP
VOUT
GND
VIN
BP
EN
1
2
3
5
4
1
2
3
5
VIN
GND
EN
4
500mA Output Current
300mA Output Current
SOT-23-5
SOT-23-5 (R-Type)
Note :
RichTek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
8
7
6
5
GND
EN
VIN
2
3
4
GND
GND
GND
VOUT
BP
`Suitable for use in SnPb or Pb-free soldering processes.
`100%matte tin (Sn) plating.
SOP-8
DS9167/A-26 March 2007
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
