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Global Mixed-mode Technology

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G975 Datasheet

2A Low Dropout Regulator

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Global Mixed-mode Technology Inc.
G975
2A Low Dropout Regulator with Enable
Features
„ Adjustable Output Low to 0.8V
„ 260mV Dropout @ 2A, VO 1.2V
„ Over Current and Over Temperature Protection
„ Enable Pin
„ Low Reverse Leakage (Output to Input )
„ Power SOP-8 (FD) Packages with Thermal Pad
„ ±2% Output Voltage
„ VO Power OK Signal
„ 1.05V, 1.2V, 1.8V and 2.5V Options by Setting
ADJ Pin Below 0.2V and Adjustable Externally
Using Resistors
„ VO Pull Low Resistance when Disable
„ VO Soft Start when Enable
Applications
„ Motherboards
„ Peripheral Cards
„ Network Cards
„ Set Top Boxes
„ Notebook Computers
Ordering Information
ORDER
NUMBER
MARKING
G975-105ADJF11U
975-105
G975-120ADJF11U
975-120
G975-180ADJF11U
975-180
G975-250ADJF11U
975-250
Note: F1: SOP-8 (FD)
1: Bonding Code
U : Tape & Reel
e.g. 105 denotes the 1.05V output voltage
Pin Configuration
General Description
The G975 is a high performance positive voltage
regulator designed for use in applications requiring
very low Input voltage and very low dropout voltage at
up to 2 amps. It operates with VPP voltage 5V and
output voltage programmable as low as 0.8V. The
G975 features ultra low dropout, ideal for applications
where VOUT is very close to VIN. Additionally, the G975
has an enable pin to further reduce power dissipation
while shutdown. The G975 provides excellent regula-
tion over variations in line, load and temperature. The
G975 provides a power OK signal to indicate if the
voltage level of VO reaches 92% of its rating value.
The G975 is available in the power SOP-8 (FD) pack-
age. It is available with 1.05V, 1.2V, 1.8V and 2.5V
internally preset outputs that are also adjustable using
external resistors.
TEMP.
RANGE
-40°C~+85°C
-40°C~+85°C
-40°C~+85°C
-40°C~+85°C
PACKAGE
(Pb free)
SOP-8 (FD)
SOP-8 (FD)
SOP-8 (FD)
SOP-8 (FD)
Typical Application Circuit
GND 1
G975
8 VEN
ADJ 2
VO 3
Thermal
Pad
7 POK
6 VPP
VO 4
5 VIN
Top View
SOP-8 (FD)
* Thermal Pad can be connected to VIN
** Connect Thermal Pad to ground plate will
have better thermal performance
VPP (5V)
VIN
VO
CPP C1 C2
1µF 20µF 20µF
R1
R2
G975
VPP
VEN
VIN
VO
ADJ
POK
GND
10kΩ
VIN
0.8 (R1+R2)
VO =
R2
Volts
R2<120kΩ is recommended
Ver: 0.1
Apr 27, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
1


Part Number G975
Description 2A Low Dropout Regulator
Maker Global Mixed-mode Technology
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