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