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Global Mixed-mode Technology

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G978 Datasheet

6A Low Dropout Regulator

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Global Mixed-mode Technology
G978
6A Low Dropout Regulator with Enable and Voltage
Selection
Features
„ DO, D1 and MODE pins to Select Output Volt-
age
„ VO Slew Rate is Between 0.5mV/µs to 10mV/µs
„ Input Voltage as Low as 1V and VPP Voltage 5V
„ 150mV Dropout @ 6A, VO 0.9V
„ Over Current and Over Temperature Protection
„ Enable Pin
„ Low Reverse Leakage (Output to Input )
„ Power SOP-8 (FD) Packages with Thermal Pad
„ ±1.5% Output Voltage
„ VO Power OK Signal
„ VO Pull Low Resistance when Disable
„ VO Soft Start when Enable and D0, D1 Changes
Applications
„ Motherboards
„ Notebook Computers
General Description
The G978 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 6 amps. It operates with VPP voltage 5V and
input voltage as low as 1.0V. The G978 features ultra
low dropout, ideal for applications where VO is very
close to VIN. Additionally, the G978 has an enable pin
to further reduce power dissipation while shutdown.
The G978 provides excellent regulation over variations
in line, load and temperature. The G978 provides a
power OK signal to indicate if the voltage level of VO
reaches 92% of its rating value.
The G978 is available in the power SOP-8 (FD) pack-
age. It is adjustable using external resistors.
Ordering Information
ORDER
NUMBER
G978F11U
Note: F1: SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
Pin Configuration
MARKING
G978
TEMP.
RANGE
-40°C~+85°C
PACKAGE
(Green)
SOP-8 (FD)
Typical Application Circuit
G978
D0 1
8 VEN/MODE
D1 2
VO 3
VO 4
Thermal
Pad
GND
7 POK
6 VPP
5 VIN
Top View
SOP-8 (FD)
* Thermal Pad is GND connection.
VPP (5V)
VEN/MODE*
VIN
VO
CPP
CIN
1µF 22µF
CO
22µF×2
G978
VPP
POK
VEN/MODE D1
VIN D0
VO GND
10kΩ
VIN
D1
D0
*Note:
VEN/MODE(VPP=5V) VEN
>1.0V
<0.5V
1
0
VEN/MODE(VPP=5V) MODE
>2.5V
<1.9V
1
0
Ver: 0.8
Mar 22, 2012
TEL: 886-3-5788833
http://www.gmt.com.tw
1


Part Number G978
Description 6A Low Dropout Regulator
Maker Global Mixed-mode Technology
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G978 Datasheet PDF






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