G961 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 1A Low Dropout Regulator with Enable

Global Mixed-mode Technology Inc.
G961
1A Low Dropout Regulator with Enable
Features
„ Adjustable Output from 1.2V to 4.8V Using Ex-
ternal Resistors
„ 1.5V, 1.8V and 2.5V Options by Setting ADJ Pin
Below 0.2V
„ Over current and over temperature protection
„ 400mV dropout @1A
„ Enable pin
„ 10µA quiescent current in shutdown
„ SOT-89-5 Package
Applications
„ Battery powered systems
„ Motherboards
„ Peripheral cards
„ Network cards
„ Set Top Boxes
„ Medical Equipment
„ Notebook Computers
General Description
The G961 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 1 Amps. Since it has
superior dropout characteristics compared to regular
LDOs, it can be used to supply 2.5V on motherboards
or 1.5V, 1.8V on peripheral cards from the 3.3V supply
thus allowing the elimination of costly heatsinks. An
enable pin further reduces power dissipation while
shut down. The G961 provides excellent regulation
over variations in line, load and temperature.
The SOT-89-5 is available with 1.5V, 1.8V and 2.5V
internally preset outputs that are also adjustable using
external resistors.
Ordering Information
ORDER NUMBER
(Pb free/Green)
MARKING
G961-15ADJTEUf
961-15
G961-18ADJTEUf
961-18
G961-25ADJTEUf
961-25
Note: TE: SOT-89-5
U : Tape & Reel
e.g. 18 denotes the 1.8V output voltage.
Pin Configuration
TEMP.
RANGE
-40°C ~ +85°C
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
SOT-89-5
SOT-89-5
SOT-89-5
Typical Application Circuit
G961
VIN
VEN
5
4
1
2
3
ADJ GND VO
SOT-89-5
Ver: 1.5
Mar 15, 2011
VEN
VIN
VO
C1
22µF
R3
I_ENH
R1
C2
47µF
R2
G961
VEN
VIN
VO
ADJ
GND
1.2 (R1+R2)
VO =
Volts
R2
R2=12kΩ is recommended
R3 should be connected for current I_ENH
restriction as V_EN > V_IN+0.3V
1
TEL: [phone]
http://www.gmt.com.tw