G954 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 2A Low Dropout Regulator

Global Mixed-mode Technology Inc.
2A Low Dropout Regulator
G954
Features
„ 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
„ Battery Powered Systems
„ Motherboards
„ Peripheral Cards
„ Network Cards
„ Set Top Boxes
„ Notebook Computers
General Description
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.
The G954 is available with 1.8V, 2.5V when ADJ pin
connected to GND and adjustable outputs using ex-
ternal resistors in SOP-8 (FD) package.
Ordering Information
ORDER
NUMBER
G954-18ADJF11U
G954-25ADJF11U
Note: F1: SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
MARKING
G954-18
G954-25
VOLTAGE
1.8V
2.5V
TEMP.
RANGE
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
(Green)
SOP-8 (FD)
SOP-8 (FD)
Pin Configuration
NC 1
G954
8 GND
VEN 2
VIN 3
Thermal
Pad
7 ADJ
6 VO
NC 4
5 NC
SOP-8 (FD)
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
Typical Application Circuit
VEN
VIN
VO
R1
C1
C2
10µF 10µF
R2
G954
VEN
VIN
VO
ADJ
GND
1.2 (R1+R2)
VO =
Volts
R2
R2=12kΩ is recommended
R2=0Ω sets V_O to fixed output mode.
Ver: 0.91
Apr 26, 2010
TEL: [phone]
http://www.gmt.com.tw
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