1 Features

• Factory-programmed precision watchdog timers:

– ±2.5% Accurate watchdog timeout and

watchdog reset delays typical at 25°C

• Watchdog disable feature

• User-programmable watchdog timeout

• User-programmable watchdog reset delay

• Input voltage range: VDD = 1.6 V to 6.5 V

• Low supply current: IDD = 10 μA (typical)

• Open-drain output

• Small 3-mm × 3-mm, 10-Pin VSON package

• Junction operating temperature range:

–40°C to +125°C

2 Applications

• Smart display

• Battery pack: e-bike/e-scooter/light electric vehicle

(LEV)

• Circuit breaker (ACB, MCCB, VCB)

• eBike / pedelec

• AC charging (pile) station

• Multifunction relay

• Vision computer

3 Description

The TPS3430 is a standalone window watchdog

timer with programmable watchdog window and

programmable watchdog reset delay for a wide variety

of applications. The TPS3430 window watchdog

achieves 2.5% timing accuracy (typical at 25°C) and

the watchdog output ( WDO) reset delay can be

set by factory-programmed default delay settings, or

programmed by an external capacitor. The watchdog

can be disabled via the SET pins to avoid undesired

watchdog timeouts during the development process or

during power on.

The TPS3430 is available in a small 3.00-mm ×

3.00-mm, 10-pin VSON package.