1 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

2 Applications

? Robot servo drive

? Mixed module (AI, AO, DI, DO)

? HVAC controller

? Electricity meter

? Infusion pump

? Surgical equipment

3 Description

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.

TPS35屬于集成電路（IC） > 監(jiān)控器。美國德州儀器公司制造生產(chǎn)的TPS35監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復(fù)位計時器、定序器、簡單復(fù)位/上電復(fù)位、智能開/關(guān)控制器、系統(tǒng)管理器、電壓檢測器和看門狗電路。