Global Mixed-mode Technology
G630/G631
Microprocessor Reset IC
Features
General Description
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
The G630/G631 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V- pow-
ered circuits.
Fully Specified Over Temperature
Available in two Output Configurations
Push-Pull RESET Output (G630)
Open-Drain RESET Output (G631)
220ms min Power-On Reset Pulse Width
10µA Supply Current
Guaranteed Reset Valid to VCC = +1V
Power Supply Transient Immunity
No External Components
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, keeping it asserted for at
least 220ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
3-Pin SOT-23 Packages
The G631 has an open-drain output stage, while the
G630 have push-pull outputs. The G631’s open-drain
Applications
Computers
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G630
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
have an active-low RESET output. The reset com-
parator is designed to ignore fast transients on VCC,
and the outputs are guaranteed to be in the correct
logic state for VCC down to 1V.
Low supply current makes the G630/G631 ideal for use
in portable equipment. The G630/G631 are available in
3-pin SOT-23 packages.
Ordering Information
ORDER
NUMBER
RESET
THRESHOLD(V)
TEMP.
RANGE
PACKAGE
(Green)
MARKING
OUTPUT TYPE
G630L293T73U
G631L293T73U
Note: T7: SOT-23
630Ax
631Ax
2.93
2.93
SOT-23
SOT-23
-40°C ~ +105°C
-40°C ~ +105°C
Push-Pull
Open-Drain
3: Bonding Code
U: Tape & Reel
Pin Configuration
Typical Application Circuit
VCC
VCC
3
VCC
VCC
RPULL-UP
*
µP
G630/G631
RESET
INPUT
RESET
1
2
GND
GND
GND
RESET
SOT-23
* G631 ONLY
ICC may increased at high TA, Therefore, can not connect
Resistors to VCC to prevent Icc abnormal behavior at high TA.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver:0.1
Mar 07, 2013
1