G961 - GMT

G961
Global Mixed-mode Technology Inc.
1A Low Dropout Regulator with Enable
Features
General Description
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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.
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Adjustable Output from 1.2V to 4.8V Using External 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
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The SOT-89-5 is available with 1.5V, 1.8V and 2.5V
internally preset outputs that are also adjustable using
external resistors.
Battery powered systems
Motherboards
Peripheral cards
Network cards
Set Top Boxes
Medical Equipment
Notebook Computers
Ordering Information
ORDER NUMBER
(Pb free/Green)
MARKING
TEMP.
RANGE
PACKAGE
G961-15ADJTEUf
961-15
-40°C ~ +85°C
SOT-89-5
G961-18ADJTEUf
961-18
-40°C ~ +85°C
SOT-89-5
G961-25ADJTEUf
961-25
-40°C ~ +85°C
SOT-89-5
Note: TE: SOT-89-5
U : Tape & Reel
e.g. 18 denotes the 1.8V output voltage.
Pin Configuration
Typical Application Circuit
IENH
R3
5
VEN
VEN
G961
VIN
G961
VEN
VIN
VIN
4
VO
VO
R1
C1
22µF
GND
ADJ
C2
47µF
R2
1
ADJ
2
3
GND
VO
SOT-89-5
1.2 (R1+R2)
Volts
R2
R2=12kΩ is recommended
VO =
R3 should be connected for current IENH
restriction as VEN > VIN+0.3V
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.5
Mar 15, 2011
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