G678 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – Micro-Power Reset IC

Global Mixed-mode Technology
Micro-Power Reset IC
G678
Features
„ Internally Fixed Threshold level of 2.3V/2.5V
„ High Accuracy ±1.5%
„ Low Supply Current 3.3µA at V_CC=3V
„ No External Components Required
„ N-Channel Open-Drain Output
„ Available in Two Output Configurations
Open-Drain RESET Output (G678H)
Open-Drain RESET Output (G678L)
„ Guaranteed Reset Valid to V_CC = +1V
„ 4-Pin SC-70-4 (SC-82 / SOT-343) Packages
Applications
„ Computers
„ Controllers
„ Intelligent Instruments
„ Critical µP and µC Power Monitoring
„ Portable / Battery-Powered Equipment
General Description
The G678 is a micro-power voltage detector supervis-
ing the power supply voltage level for microprocessors
(μP) or digital systems. They provide excellent circuit
reliability and low cost by eliminating external compo-
nents. It provides internally fixed threshold level of
2.3V/2.5V. It features low supply current of 3.3μA at
V_CC=3V.
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below the preset threshold. Once V_CC recovered up-
crossing the threshold level, the reset signal will be
released.
The G678 is available in 4-Pin SC-70 (SC-82 /
SOT-343) Package.
Pin Configuration
G678TV1
RESET/ 1
RESET
4 GND
VCC 2
3 NC
SC-70-4
(SC-82 / SOT-343)
G678TV2
VCC 1
4
RESET/
RESET
GND 2
3 NC
SC-70-4
(SC-82 / SOT-343)
Typical Application Circuit
VCC
µP
RESET/
RESET
GND
100k
Pull up
GND
G678
VCC
RESET/
RESET
ICC may increased at high TA, Therefore, can not connect
Resistors to VCC to prevent Icc abnormal behavior at high TA.
Ver: 1.6
Apr 10, 2012
TEL: [phone]
http://www.gmt.com.tw
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