G692/G693

G692/G693
Global Mixed-mode Technology
4-Pin µP Voltage Monitors with Manual Reset Input
Features
General Description
„ Precision Monitoring of +3V, +3.3V, and +5V
The G692/G693 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- powered circuits. The G692/G693 also provides a debounced manual reset input.
Power-Supply Voltages
„ Fully Specified Over Temperature
„ Available in Three Output Configurations
Push-Pull RESET Output (G692L)
Push-Pull RESET Output (G692H)
Open-Drain RESET Output (G693L)
„ 230ms Min Power-On Reset Pulse Width
„ 14µA Supply Current
„ Guaranteed Reset Valid to VCC = +1V
„ Power Supply Transient Immunity
„ No External Components
„ Manual Reset Input
„ SOT-143, SC-70-5(SOT-353) and SOT-23-5 Package
„ 2% Threshold Accuracy
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 230ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
The G693L has an open-drain output stage, while the
G692 have push-pull outputs. The G693L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC.
Applications
„ Computers
The G692L have an active-low RESET output, while
the G692H has an active-high RESET output. The reset comparator 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.
„ Controllers
„ Intelligent Instruments
„ Critical µP and µC Power Monitoring
„ Portable / Battery-Powered Equipment
„ Automotive
Low supply current makes the G692/G693 ideal for use
in portable equipment. The G692/G693 are available in
a SOT-143, SC-70-5(SOT-353), SOT-23-5 packages.
Pin Configuration
Typical Application Circuit
G692/G693
G692/G693
GND
4
1
GND
1
GND
2
RESET
(RESET)
3
VCC
5
MR
4
VCC
VCC
VCC
VCC
SC-70-5 (SOT-353)
RPULL-UP*
G692/G693
MR
G692/G693
RESET
(RESET)
3
2
MR
RESET
(RESET)
GND
GND
1
NC
2
5
VCC
µP
RESET
INPUT
GND
SOT-143
*G693 ONLY
ICC may increased at high TA, Therefore, can not connect
Resistors to VCC to prevent Icc abnormal behavior at high TA.
RESET
(RESET)
4
3
MR
()is for G692H
SOT-23-5
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 2.5
Apr 10, 2012
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