RT9167/A
Low-Noise, Fixed Output Voltage,
200mA/500mA LDO Regulator
General Description
The RT9167/A is a 200mA/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 1µF
ceramic output capacitor.
The RT9167/A uses and 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-power devices. Other features
include a reference bypass pin to improve low noise
performance, current limiting, and over temperature
protection.
Features
Stable with Low-ESR Output Capacitor
Low Dropout Voltage (220mV and 200mA)
Low Operation Current - 80µA Typical
µ
Shutdown Function
Low Noise Output
Low Temperature Coefficient
Current and Thermal Limiting
Custom Voltage Available
SOT-25 and SOP-8 Packages
Applications
Cellular Telephones
Laptop, Notebook, and Palmtop Computers
Battery-powered Equipment
Hand-held Equipment
Ordering Information
RT9167/A-
Package type
B : SOT-25 Type I
BR : SOT-25 Type II
S : SOP-8
Operating temperature range
C: Commercial standard
Output voltage
15 : 1.5V
16 : 1.6V
:
:
49 : 4.9V
50 : 5.0V
500mA Output current
200mA Output current
Pin Configurations
Part Number
RT9167/A-
CB
Pin Configurations
TOP VIEW
5
4
(Plastic SOT-25)
1
2
3
1.
2.
3.
4.
5.
IN
GND
SHDN
BP
OUT
RT9167/A-
CBR
TOP VIEW
5
4
(Plastic SOT-25)
1
2
3
1.
2.
3.
4.
5.
OUT
GND
IN
SHDN
BP
RT9167/A-
CS
SHDN 1
IN 2
OUT 3
BP 4
TOP VIEW
8 GND
7 GND
6 GND
5 GND
(Plastic SOP-8)
DS9167/A-10 July 2001
www.richtek-ic.com.tw
1
ETC [ ETC ]
