Product
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TPS3435
  • TPS3435
  • TPS3435
  • TPS3435
  • TPS3435
  • TPS3435
  • TPS3435
  • TPS3435

TPS3435

ACTIVE

Nano-quiescent-current precision timeout watchdog timer

Texas Instruments TPS3435 Product Info

1 April 2026 3

Parameters

Rating

Automotive, Catalog

Number of supplies monitored

1

Features

Latching, Manual reset capable, Stand-alone watchdog, Timeout watchdog, Watchdog disable, Watchdog timer

Iq (typ) (mA)

0.00025

Output driver type/reset output

Active-low, Open-drain, Push-Pull

Time delay (ms)

1, 5, 10, 20, 50, 100, 200

Watchdog timer WDI (s)

Programmable

Supply voltage (min) (V)

0.7

Supply voltage (max) (V)

6

TI functional safety category

Functional Safety-Capable

Operating temperature range (°C)

-40 to 125

Package

SOT-23-THN (DDF)-8-8.12 mm² 2.9 x 2.8

Features

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

Description

The TPS3435 is an ultra-low power consumption (250nA 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 also offers unique features such as enable-disable, start-up delay.

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 provides a performance upgrade alternative to TPS3431 device family. The TPS3435 is available in a small 6-pin WSON and 8-pin SOT-23 package.

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