G9941 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – 4X Linear Fan Driver for 12V DC Fan

Global Mixed-mode Technology Inc.
G9941
4X Linear Fan Driver for 12V DC Fan
Features
„ VO Follows 4.0 Times of VSET
„ 0.5V Dropout @ 0.5A
„ Over Current and Over Temperature Protection
„ Enable Pin
„ 100µA Quiescent Current in Shutdown
„ Power TO-252-5, SOP-8 with power pad
Package
Applications
„ Notebook Computer Fan Driver
„ Projector Cooling Fan
„ Battery Powered Systems
„ Motherboards
„ Peripheral Cards
Ordering Information
ORDER
NUMBER
G9941TJ1U
G9941F11U
Note:TJ: TO-252-5
1: Bonding Code
U: Tape & Reel
MARKING
F1:SOP (FD)
G9941
G9941
General Description
The G9941 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 0.5 Amps. The
G9941 VO output voltage follows the 4.0 times of
VSET voltage until it reaches VIN voltage. The VSET
voltage must be larger than 1V to guarantee VO 4.0
times of VSET. An enable pin further reduces power
dissipation while shut down. The G9941 provides ex-
cellent regulation over variations in line, load and
temperature.
The G9941 is available in the power TO-252-5 and
SOP-8 with power pad package.
TEMP.
RANGE
-40°C ~ +85°C
-40°C ~ +85°C
PACKAGE
(Green)
TO-252-5
SOP-8 (FD)
Pin Configuration
G9941
GND
Top View
123 45
VO VIN GND VEN VSET
TO-252-5
VO 1
G9941
VIN 2
VEN 3
Thermal
Pad
VSET 4
SOP-8 (FD)
8 NC/GND
7 NC/GND
6 GND
5 NC/GND
Ver: 0.3
Aug 24, 2009
Typical Application Circuit
G9941
VSET
VSET
VEN
VIN
VEN
VIN
VO
VO
GND
C_O
10µF
C_IN
2.2µF
VO =4 X VSET
VSET
VIN
VO
G9941
*
VSET
VEN
VIN
VO
GND
C_O
10µF
C_IN
2.2µF
VO =4 X VSET
* : V_SET < 0.3V Disable; V_SET >1V Enable
TEL: [phone]
http://www.gmt.com.tw
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