
Ver: 1.2
Feb 13, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G9612
Global Mixed-mode Technology Inc.
Low-Dropout, 500mA Linear Regulator with Reset
Features
500mA Output Current, with Foldback Current
Limiting
High Ripple Rejection
±
1.5% Output Accuracy
±
2% Reset Threshold Accuracy
Externally Programmable Reset Time Delay
Generator
Internal 500mA P-Channel Pass Transistor
320μA quiescent Current
Thermal Overload Protection
SOT89-5 Package
Applications
CD ROM or DVD ROM
Slim-Type CD/DVD
DVD Player
General Description
The G9612 are low-dropout, linear regulator with
reset function supply 3.4V, 3.3V or 2.5V output for
currents up to 500mA. They are available in a 1.0W
SOT 89-5 package with 0.18 inch
2
copper heat sink.
Typical dropouts are 560mV at 5V and 500mA.
Other features include foldback current limiting and
thermal overload protection.
The reset function in G9612 detect V
CC
level with
hysteresis, keeping it asserted for time delay deter-
mined by external capacitor. The reset output is ac-
tive low open-drain output. The detection threshold
are 3.9V or 4.2V.
The output is preset at 3.4V for the G9612A, 3.3V
for the G9612B/C, and 2.5V for G9612D. The reset
threshold is preset at 4.2V for G9612 A/B/D and
3.9V for G9612C.
Ordering Information
PART
NUMBER
G9612ATEU
G9612BTEU
G9612CTEU
G9612DTEU
MARKING
REGULATOR
OUTPUT VOLTAGE
3.4
3.3
3.3
2.5
RESET THRESHOLD
VOLTAGE
4.2
4.2
3.9
4.2
TEMO.
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
SOT89-5L
SOT89-5L
SOT89-5L
SOT89-5L
G9612A
G9612B
G9612C
G9612D
Pin Configuration
Typical Operation Circuit
V
IN
RESET
C
D
GND
G9612
VOLTAGE
V
OUT
(Tantalum or Aluminum)
10k
V
CC
R
pull-high
1μF
RESET
V
OUT
V
IN
SOT 89-5L
G9612
1
2
3
5
4
GND
C
D
OUTPUT
10μF