RT9167B Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – The RT9167B is a 300mA low dropout and low noise

RT9167B
Low-Noise, Fixed Output Voltage, 300mA LDO Regulator
General Description
The RT9167B is a 300mA low dropout and low noise
micropower regulator suitable for portable applications.
The output voltages range from 1.5V to 5V in 100mV
increments and 2% accuracy. The RT9167B is designed
for use with very low ESR capacitors. The output remains
stable even with 1μF ceramic output capacitor.
The RT9167B uses an internal PMOS as the pass device,
which does not cause extra GND current in heavy load
and dropout conditions. The shutdown mode with 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.
Ordering Information
RT9167B-
Package Type
F : MSOP-8
Lead Plating System
P : Pb Free
Note :
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
2H : 2.85V
Richtek 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.
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area.
Features
z Stable with Low-ESR Output Capacitor
z Low Dropout Voltage (350mV @ 300mA)
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
z MSOP-8 Package
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
Pin Configurations
(TOP VIEW)
NC
VIN
2
GND
3
VOUT
4
8
NC
7
EN
6
BP
5
NC
MSOP-8
Typical Application Circuit
V_IN
C_IN
1uF
RT9167B
2 _IN
VOUT ⁴
3 _GND
Chip Enable ⁷ _EN
BP ⁶
V_OUT
C_OUT
1uF
C_BP
10nF
DS9167B-01 April 2011
www.richtek.com
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