RT9161/A
300/500mA Low Dropout Linear Voltage Regulator
General Description
The RT9161/A is a 300/500mA fixed output voltage low
dropout linear regulator. Typical ground current is
approximately 110μA, from zero to maximum loading
conditions. Wide range of available output voltage fits most
of applications. Built-in output current-limiting most
thermal-limiting provide maximal protection against any
fault conditions.
For ease of application, the RT9161/A comes in the popular
3-pin SOT-23 (300mA), SOT-89 (300mA), SOT-223
(500mA), or TO-92 packages.
Ordering Information
RT9161/A-
Features
Low Dropout Voltage of 200mV at Output Current
100mA, 450mV at Output Current 300mA, and
750mV at 500mA Output Current
Guaranteed 300/500mA Output Current
Internal 1.5Ω P-MOSFET Draws No Base Current
Ω
Low Ground Current 110μA
μ
2% Accuracy Output Voltage
Input Voltage Range up to 12V
Extremely Tight Load Regulation
Fast Transient Response
Current-limiting and Thermal-limiting
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Package Type
V : SOT-23-3
X : SOT-89
G : SOT-223
ZL : TO-92 (L-Type)
ZT : TO-92 (T-Type)
Voltage Regulator for LAN Card, CD-ROM, and DVD
Wireless Communication Systems
Battery Powered Systems
Marking Information
For marking information, contact our sales representative
Operating Temperature Range
directly or through a RichTek distributor located in your
C : Commercial Standard
P : Pb Free with Commercial Standard area, otherwise visit our website for detail.
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
500mA Output Current
300mA Output Current
Note :
RichTek Pb-free products are :
Pin Configurations
(TOP VIEW)
VIN
3
1
2
1
GND
VOUT
2
GND
SOT-23-3
−RoHS compliant and compatible with the current require-
3
VIN VOUT
(TAB)
SOT-89
ments of IPC/JEDEC J-STD-020.
−Suitable for use in SnPb or Pb-free soldering processes.
−100%matte tin (Sn) plating.
1
GND
2
3
VIN VOUT
(TAB)
SOT-223
DS9161/A-29 June 2005
www.richtek.com
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