TPS3435CAKAGDDFR

The TPS3435 is an ultra-low power consumption (250 nA typical) device offering a programmable timeout watchdog timer. The TPS3435 offers a high accuracy timeout watchdog timer with a host of features for a wide variety of applications. The timeout watchdog timer can be factory programmed or user programmed using an external capacitor. The timer value can be changed on-the-fly using a combination of logic pins. The watchdog feature can be enabled or disabled using a dedicated pin or combination of timer extension pins. The device also offers start-up delay options to disable watchdog monitoring for fixed time immediately after host power up. The WDO delay can be set by factory-programmed default delay settings or programmed by an external capacitor. The device also offers a latched output operation where the output is latched until the watchdog fault is cleared. The TPS3435 provide performance upgrade alternative to TPS3431 device family. The TPS3435 is available in a small 6-pin WSON and 8-pin SOT23 package.

Applications

• Robot servo drive
• Mixed module (AI, AO, DI, DO)
• HVAC controller
• Electricity meter
• Infusion pump
• Surgical equipment

Key features

• Factory programmed or user-programmable watchdog timeout
• ±10% Accurate timer (maximum)
• Factory programmed: 1 msec to 100 sec
• Factory programmed or user-programmable reset delay
• ±10% Accurate timer (maximum)
• Factory programmed option: 2 msec to 10 sec
• Input voltage range: VDD = 1.04 V to 6.0 V
• Ultra low supply current: IDD = 250 nA (typical)
• Open-drain, push-pull; active-low outputs
• Various programmability options: Watchdog enable-disable
• Watchdog startup delay: no delay to 10 sec
• On the fly timer extension: 1X to 256X
• Latched output option
• MR functionality support