GMT G9941F1, G9941TJ Schematic [ru]
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 G9941 -40°C ~ +85°C TO-252-5
G9941F11U G9941 -40°C ~ +85°C SOP-8 (FD)
Note:TJ: TO-252-5 F1:SOP (FD)
1: Bonding Code
U: Tape & Reel
MARKING
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 excellent 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
PACKAGE
(Green)
Pin Configuration Typical Application Circuit
G9941
1
1
2
2
3
3
4
4
G9941
Top View
Top View
1
1
2
2
VIN
VIN
VO
VO
TO-252-5
TO-252-5
GND
GND
3
3
GND
GND
G9941
G9941
Thermal
Thermal
Pad
Pad
45
45
VEN
VEN
VSET
VSET
8
8
7
7
6
6
5
5
NC/GND
NC/GND
NC/GND
NC/GND
GND
GND
NC/GND
NC/GND
VO
VO
VIN
VIN
VEN
VEN
VSET
VSET
VSET
VSET
VEN
VEN
VIN
VIN
VO
VO
VO =4 X VSET
VO =4 X VSET
VSET
VSET
VIN
VIN
VO
VO
C
C
10µF
10µF
C
C
O
O
10µF
10µF
O
O
*
*
C
C
2.2µF
2.2µF
C
C
2.2µF
2.2µF
IN
IN
VSET
VSET
VEN
VEN
VIN
VIN
VO
VO
IN
IN
VSET
VSET
VEN
VEN
VIN
VIN
VO
VO
G9941
G9941
GND
GND
G9941
G9941
GND
GND
Ver: 0.3
Aug 24, 2009
SOP-8 (FD)
SOP-8 (FD)
1
VO =4 X VSET
VO =4 X VSET
*: V
< 0.3V Disable; V
*: V
< 0.3V Disable; V
SET
SET
>1V Enable
>1V Enable
SET
SET
TEL: 886-3-5788833
http://www.gmt.com.tw
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