Power Management ICs

Voltage Detector with Delay Function (Internal Delay Time Setting) S-801 Series

The S-801 series is a series of high-precision voltage detectors with a built-in delay time generator of fixed time developed using CMOS process. The detection voltage is fixed internally, with an accuracy of ±2.0%. Internal oscillator and counter timer can delay the release signal without external parts. Three delay times 50 ms, 100 ms, and 200 ms are available. Two output forms, Nch open-drain and CMOS output, are available.


Ultra-low current consumption
1.3 µA typ. (at VDD = 3.5V)
High-precision detection voltage
Hysteresis width
60mV typ.
Three delay times
A series: 50 ms typ.,
B series: 100 ms typ.,
C series: 200 ms typ.
ON/OFF switch of delay time (DS pin)
Operating voltage range
0.95V to 10.0V
Detection voltage
2.2V to 6.0V (0.1V step)
Output form
Active low Nch open-drain output or active low CMOS output
Lead-free products


  • Power monitor for portable equipment such as note computers, digital cameras, PDA, and cellular phones
  • Constant voltage power monitor for cameras, video equipment and communication devices
  • Power monitor for microcomputers and reset for CPUs

Standard Circuit

Standard Circuit