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G961 Datasheet(PDF) 1 Page - Global Mixed-mode Technology Inc

Part No. G961
Description  1A Low Dropout Regulator with Enable
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Manufacturer  GMT [Global Mixed-mode Technology Inc]
Direct Link  http://www.gmt.com.tw
Logo GMT - Global Mixed-mode Technology Inc

G961 Datasheet(HTML) 1 Page - Global Mixed-mode Technology Inc

  G961 Datasheet HTML 1Page - Global Mixed-mode Technology Inc  
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Ver: 1.5
Mar 15, 2011
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G961
Global Mixed-mode Technology Inc.
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
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
VEN
VIN
VO
R1
R2
VEN
VIN
VO
ADJ
GND
G961
1.2 (R1+R2)
VO =
R2
Volts
VO
ADJ
SOT-89-5
G961
1
23
5
4
GND
VEN
VIN
C1
22µF
C2
47µF
R2=12k
Ω is recommended
R3 should be connected for current I
ENH
restriction as V
EN > VIN+0.3V
R3
I
ENH
VEN
VIN
VO
R1
R2
VEN
VIN
VO
ADJ
GND
G961
1.2 (R1+R2)
VO =
R2
Volts
VO
ADJ
SOT-89-5
G961
1
23
5
4
GND
VEN
VIN
C1
22µF
C2
47µF
R2=12k
Ω is recommended
R3 should be connected for current I
ENH
restriction as V
EN > VIN+0.3V
R3
I
ENH


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