Automotive, 125°C Operation, 3.8 μA Current Consumption Watchdog Timer with Reset Function S-19400/19401 Series

Standard Circuit Example TMSOP-8 (FM008-A) HSNT-8(2030) (PP008-A)

The S-19400/19401 Series is a watchdog timer developed using CMOS technology, which can operate with low current consumption of 3.8 μA typ. The reset function and the low voltage detection function are available.

Features

Detection voltage

2.0 V to 5.0 V, selectable in 0.1 V step

Detection voltage accuracy

±2.0%

Input voltage

Vdd  = 0.9 V to 6.0 V

Hysteresis width

5% typ.

Current consumption during watchdog timer operation

3.8 μA typ. 

Reset time-out period

14.5 ms typ. (Cpor = 2200 pF)

Watchdog time-out period

24.6 ms typ. (C_WDT = 470 pF)

Watchdog operation is switchable

Enable, Disable

Watchdog operation voltage range

2.5 V to 6.0 V

Watchdog mode switching function^*1

Time-out mode, window mode

Watchdog input edge is selectable

Rising edge, falling edge, both rising and falling edges

 Product type is selectable

S-19400 Series (Product with W / T pin (Output: WDO pin))

S-19401 Series (Product without W / T pin (Output: RST pin, WDO pin))

Operation temperature range

Ta = −40°C to +125°C

Lead-free (Sn 100%), halogen-free

AEC-Q100 qualified^*2

*1. The S-19401 Series is fixed to the window mode.
*2. Contact our sales representatives for details.

Applications

• For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)