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SiP824ZEUDT-TR1-SIP825TEU
5-Pin UP Reset Circuits with Watchdog Timer and Manual Reset
SiP823/SiP824/SiP825
Vishay Siliconix
5-Pin �P Reset Circuits with Watchdog Timer and Manual ResetFEATURES APPLICATIONS Precision Power Supply Monitoring with �1.5% Accuracy Low Quiescent Current: 3 �A max. Low Threshold Voltage Temperature Coefficient: 100 ppm max. Guaranteed RESET Valid Dow to VCC = 1 V Seven Reset Threshold Options Small SOT23-5 Packages No External Components Power Supply Transient Immunity Portable Intelligent Electronics Computers and Controllers Automotive Electronics Critical �P/�C Power Supply Monitoring
DESCRIPTION
The SiP823/SiP824/SiP825 series are �Processorsupervisory circuits in a 5-pin SOT23 package, that combine
the functions of power supply and �Processor monitoring.
If the power supply voltage drops, or has been, below a safe
level or the �Processor shows signs of problematic inactivity,the circuit will generate a reset signal at it’s output.
The SiP823 and SiP825 have an input to accommodatemanual reset.
Seven pre-programmed reset threshold voltage levels areavailable as standard options.
Specially configured options are available upon request,allowing for further customization of reset voltage, reset
time-out, and watchdog time-out periods.
The SiP823 has a reset output that is “active low” and theSiP824 and SiP825 have complementary outputs for both
“active high” and “active low” resets. Both output drives arepush/pull configurations.
Space saving SOT23-5 packages and low quiescent current
make this family of products ideally suited for portable batteryoperated equipment.
These circuits fully ignore fast negative VCC transients and
have valid reset output signals with power supply levels downto 1 V.
Top View
SOT-23 VCC
See page 2 for ordering and marking information.
GND WDI
RESET
Top View
SOT-23 VCC
GND WDI
RESET
Top View
SOT-23 VCC
GND MR
RESET
RESET RESET
VCCMANUALRESET
