Power Management ICs

Sense-input Voltage Detector With Delay Function (External Delay Time Setting) S-1004 Series

The S-1004 Series is a high-accuracy voltage detector developed using CMOS technology. The detection voltage is fixed internally with an accuracy of ±1.0% (−Vdet(s) ≥ 2.2 V). It operates with current consumption of 500 nA typ. 
Apart from the power supply pin, the detection voltage input pin (SENSE pin) is also prepared, so the output is stable even if the SENSE pin falls to 0 V. 
The release signal can be delayed by setting a capacitor externally, and the release delay time accuracy at Ta = +25°C is ±15%. 
Two output forms Nch open-drain output and CMOS output are available.

Features

Detection voltage
1.0 V to 5.0 V (0.1 V step)
Detection voltage accuracy
±1.0% (2.2 V ≤ –Vdet(s) ≤ 5.0 V)
±22 mV (1.0 V ≤ –Vdet(s) < 2.2 V)
Current consumption
500 nA typ.
Operation voltage range
0.95 V to 10.0 V
Hysteresis width
5% ±2%
Release delay time accuracy
±15% (Cd = 4.7 nF, Ta = +25°C)
Output form
Nch open-drain output (Active “L”)
CMOS output (Active “L”)
Operation temperature range
Ta = -40°C to +85°C
Lead-free (Sn 100%), halogen-free

Applications

  • Power supply monitor for microcomputer and reset for CPU
  • Constant voltage power supply monitor for TV, Blu-ray recorder and home appliance
  • Power supply monitor for portable devices such as notebook PC, digital still camera and mobile phone