RT9179 Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – Adjustable, 300mA LDO Regulator with Enable

RT9179
Adjustable, 300mA LDO Regulator with Enable
General Description
The RT9179 is a high performance linear voltage regulator
with enable high function and adjustable output with a
1.175V reference voltage. It operates from an input of 3V
to 5.5V and provides output current up to 300mA with two
external resistors to set the output voltage ranges from
1.175V to 4.5V.
The RT9179 has superior regulation over variations in line
and load. Also it provides fast respond to step changes in
load. Other features include over-current and over-
temperature protection. The device has enable pin to reduce
power consumption in shutdown mode.
The devices is available in the popular SOT-23-5 package.
Ordering Information
RT9179
Package Type
B : SOT-23-5
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
RichTek Pb-free and Green 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.
`100% matte tin (Sn) plating.
Features
z 300mV Dropout @ 300mA
z 150μA Low Ground Pin Current
z Excellent Line and Load Regulation
z <1μA Standby Current in Shutdown Mode
z Guaranteed 300mA Output Current
z Stable with 1μF Input and Output Ceramic Capacitor
z Adjustable Output Voltage Ranges from 1.175V to
4.5V
z Over-Temperature/Over-Current Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Battery-Powered Equipment
z Graphic Card
z Peripheral Cards
z PCMCIA Card
Marking Information
For marking information, contact our sales representative
directly or through a RichTek distributor located in your
area, otherwise visit our website for detail.
Pin Configurations
(TOP VIEW)
VIN 1 5 VOUT
GND 2
EN 3 4 ADJ
SOT-23-5
DS9179-08 March 2007
www.richtek.com
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