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.