G630 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Microprocessor Reset IC

Global Mixed-mode Technology
G630/G631
Microprocessor Reset IC
Features
„ Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
„ 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 V_CC = +1V
„ Power Supply Transient Immunity
„ No External Components
„ 3-Pin SOT-23 Packages
Applications
„ Computers
„ Controllers
„ Intelligent Instruments
„ Critical µP and µC Power Monitoring
„ Portable / Battery-Powered Equipment
„ Automotive
General Description
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.
These circuits perform a single function: they assert a
reset signal whenever the V_CC supply voltage declines
below a preset threshold, keeping it asserted for at
least 220ms after V_CC has risen above the reset
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
The G631 has an open-drain output stage, while the
G630 have push-pull outputs. The G631’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than V_CC. The G630
have an active-low RESET output. The reset com-
parator is designed to ignore fast transients on V_CC,
and the outputs are guaranteed to be in the correct
logic state for V_CC 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
MARKING
G630L293T73U
630Ax
G631L293T73U
Note: T7: SOT-23
3: Bonding Code
U: Tape & Reel
631Ax
RESET
THRESHOLD(V)
2.93
2.93
TEMP.
RANGE
-40°C ~ +105°C
-40°C ~ +105°C
OUTPUT TYPE
Push-Pull
Open-Drain
PACKAGE
(Green)
SOT-23
SOT-23
Pin Configuration
Typical Application Circuit
VCC
3
1
2
GND
RESET
SOT-23
Ver:0.1
Mar 07, 2013
V_CC
V_CC
G630/G631
RESET
GND
V_CC
R_PULL-UP*
µP
RESET
INPUT
GND
* G631 ONLY
ICC may increased at high T_A, Therefore, can not connect
Resistors to VCC to prevent Icc abnormal behavior at high TA.
TEL: [phone]
http://www.gmt.com.tw
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