1 Features

• AEC-Q100 qualified with the following results:

– Device temperature grade 1: –40°C to 125°C

ambient operating temperature range

• Input voltage range: VDD = 1.04 V to 6.0 V

• Fixed threshold voltage (VIT-): 1.05 V to 5.4 V

– Threshold voltage available in 50 mV steps

– 1.2 Voltage threshold accuracy (maximum)

– Built-in hysteresis (VHYS): 5 (Typical)

• Ultra low supply current: IDD = 250 nA (typical)

• Factory programmed or user-programmable

watchdog timeout

– ±10 Accurate timer (maximum)

– Factory programmed close window: 1msec to

100sec

• Factory programmed or user-programmable reset

delay

– ±10 Accurate timer (maximum)

– Factory programmed option: 2 msec to 10 sec

• Open-drain, push-pull; active-low outputs

• Various programmability options:

– Watchdog enable-disable

– Watchdog startup delay: no delay to 10 sec

– Open window to close window ratio option: 1X

to 511X

– Latched output option

• MR functionality support

2 Applications

• On-board (OBC) and wireless charger

• Driver monitoring

• Battery Management System (BMS)

• Front camera

• Surround view system ECU

3 Description

The TPS36-Q1 is an ultra-low power consumption

(250 nA typical) device offering a precision voltage

supervisor with a programmable window watchdog

timer. The TPS36-Q1 supports wide threshold levels

for undervoltage supervision with 1.2 accuracy

across the specified temperature range.

The TPS36-Q1 offers a high accuracy window

watchdog timer with host of features for a wide variety

of applications. The close window timer can be factory

programmed or user programmed using an external

capacitor. The open window to close window ratio

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 ratio pins. The device also offers start-up delay

options to disable watchdog monitoring for fixed

time immediately after host power up or a RESET

event. The TPS36-Q1 offers a pinout option with

an independent WDO pin. This helps determine the

nature of the fault condition.

The RESET or WDO delay can be set by factoryprogrammed

default delay settings or programmed by

an external capacitor. The device also offers a latched

output operation where the output is latched until the

supervisor or watchdog fault is cleared.

The TPS36-Q1 is available in a small 8-pin SOT23

package.