RT9161/A
300/500mA Low Dropout Linear Voltage Regulator
General Description
Features
z Low Dropout Voltage of 200mV at Output Current
100mA, 450mV at Output Current 300mA, and
750mV at 500mA Output Current
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.
z Guaranteed 300/500mA Output Current
z Internal 1.5Ω P-MOSFET Draws No Base Current
z Low Ground Current 110μA
z 2%Accuracy Output Voltage
z Input Voltage Range up to 12V
For ease of application, the RT9161/Acomes in the popular
3-pin SOT-23 (300mA), SOT-89 (300mA), SOT-223
(500mA), or TO-92 packages.
z Extremely Tight Load Regulation
z Fast Transient Response
z Current-limiting and Thermal-limiting
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9161/A-
Applications
z Voltage Regulator for LANCard, CD-ROM, andDVD
z Wireless Communication Systems
z Battery Powered Systems
Package Type
V : SOT-23-3
X : SOT-89
G : SOT-223
ZL : TO-92 (L-Type)
ZT : TO-92 (T-Type)
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
Pin Configurations
(TOP VIEW)
VIN
500mA Output Current
300mA Output Current
Note :
3
1
2
3
2
Richtek products are :
GND
VOUT
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
VIN
(TAB)
GND
VOUT
SOT-23-3
SOT-89
` Suitable for use in SnPb or Pb-free soldering processes.
1
2
3
VIN
GND
VOUT
(TAB)
SOT-223
DS9161/A-35 April 2011
www.richtek.com
1