GMT G954-12T55U 2a low dropout regulator Datasheet

G954
Global Mixed-mode Technology Inc.
2A Low Dropout Regulator
Features
General Description
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The G954 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 2 Amps. Since it has
superior dropout characteristics compared with regular
LDOs, it can be used to supply 2.5V on motherboards
or 1.8V on peripheral cards from the power supply
thus allowing the elimination of costly heatsinks. The
G954 provides excellent regulation over variations in
line, load and temperature. It provides over current
and over temperature protection functions.
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Fixed Output Voltage 1.8V and 2.5V
Connect ADJ to GND for Fixed Output Mode
Adjustable Output Using External Resistors
Over Current and Over Temperature Protection
Output Current 2A
SOP-8 (FD) Package
Applications
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Battery Powered Systems
Motherboards
Peripheral Cards
Network Cards
Set Top Boxes
Notebook Computers
The G954 is available with 1.8V, 2.5V when ADJ pin
connected to GND and adjustable outputs using external resistors in SOP-8 (FD) package.
Ordering Information
ORDER
NUMBER
MARKING
VOLTAGE
TEMP.
RANGE
PACKAGE
(Green)
G954-18ADJF11U
G954-18
1.8V
-40°C ~ +85°C
SOP-8 (FD)
G954-25ADJF11U
G954-25
2.5V
-40°C ~ +85°C
SOP-8 (FD)
Note: F1: SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
Pin Configuration
Typical Application Circuit
G954
G954
NC
8
1
VEN
2
VIN
3
NC
4
Thermal
Pad
GND
7
ADJ
6
VO
5
NC
VEN
VEN
VIN
VIN
VO
VO
R1
C1
10µF
GND
ADJ
C2
10µF
R2
SOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
1.2 (R1+R2)
Volts
R2
R2=12kΩ is recommended
VO =
R2=0Ω sets VO to fixed output mode.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.91
Apr 26, 2010
1
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