G991 Datasheet, PDF (1/2 Pages) Global Mixed-mode Technology Inc – 1.6X Linear Fan Driver with VO Fully On Control

Global Mixed-mode Technology Inc.
G991
1.6X Linear Fan Driver with VO Fully On Control
Features
„ VO Follows 1.6 Times of VSET
„ 150mV Dropout @ 0.5A
„ Over Current and Over Temperature Protection
„ FON Pin to Turn VO Fully On
„ Power SOP-8 Package
Applications
„ Notebook Computer Fan Driver
„ Battery Powered Systems
„ Motherboards
„ Peripheral Cards
General Description
The G991 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 0.5 Amps. The G991
VO output voltage follows the 1.6 times of VSET volt-
age until it reaches VIN voltage. The VSET voltage
must be larger than 1V to guarantee VO 1.6 times of
VSET. An FON pin turns V_O output fully on when
given low. The G991 provides excellent regulation
over variations in line, load and temperature.
The G991 is available in the power SOP-8 package.
Ordering Information
ORDER
NUMBER
G991P11U
Note: P1: SOP-8
1: Bonding Code
U: Tape & Reel
Pin Configuration
MARKING
G991
TEMP.
RANGE
-40°C ~ +85°C
PACKAGE
(Green)
SOP-8
Typical Application Circuit
FON 1
VIN 2
VO 3
VSET 4
G991
SOP-8
8 GND
7 GND
6 GND
5 GND
VSET
FON
VIN
VO
G991
VSET
FON
VIN
VO
GND
C_O
2.2µF
C_IN
2.2µF
VO =1.6 X VSET
Ver: 1.0
Mar 23, 2009
TEL: [phone]
http://www.gmt.com.tw
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