1 Features

• ASIL-B Functional Safety-Compliant product

– Development target for Functional Safety

applications

– Documentation to aid ISO 26262 system design

– Systematic capability up to ASIL D

– Hardware capability up to ASIL B

• AEC-Q100 qualified with the following results:

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

• Monitor state-of-the art SoCs

– Available in 2 to 6 voltage monitor channel

options

– Input voltage range: 2.6V to 5.5V

– Undervoltage lockout (UVLO) (falling): 2.6V

– High threshold accuracy:

• ±6mV (–40°C to +125°C)

– Fixed window threshold levels

• 5mV steps from 0.2V to 1.475V

• 20mV steps from 0.8V to 5.5V

• Trigger Window Watchdog

– Programmable OPEN/CLOSE watchdog timing

via I2C (1ms to 864ms)

– Start-up delay for SoC boot up initialization

(2ms to 3.48s)

– Programmable maximum violation count (up to

7 errors) before WDO assertion

– Programmable WDO Delay

– Watchdog disable pin (WDE)

• Miniature package and minimal component cost

– 3mm x 3mm QFN package

– User adjustable voltage threshold levels via I2C

– User adjustable glitch immunity and hysteresis

levels via I2C

• Designed for safety applications

– CRC Error Check (static and dynamic)

– Active-low open-drain NIRQ, NRST, and WDO

outputs

2 Applications

• Advanced driver assistance system (ADAS)

• Sensor fusion

3 Description

The TPS388C0x-Q1 device is an integrated

multichannel window monitor reset IC with remote

sense pin options and integrated window watchdog

available in a 16-pin 3mm x 3mm QFN package.

This highly accurate multichannel voltage supervisor

is designed for systems that operate on low-voltage

supply rails and have marginal supply tolerances.

Internal glitch immunity and noise filters further

eliminate false resets resulting from erroneous

signals. This TPS388C0x-Q1 device does not require

any external resistors for setting overvoltage and

undervoltage reset thresholds, which further optimizes

overall accuracy, cost, size, and improves reliability

for safety systems. I2C functionality gives flexibility

in selecting thresholds, reset delays, glitch filters,

and pin functionality. This device offers CRC error

checking. The device has a built in window watchdog

with independent watchdog enable.

This device has a low typical quiescent current

specification of 1500μA (typical). The TPS388C0x-

Q1 is designed for automotive applications and is

qualified for AEC-Q100 Grade 1 and qualified as a

functional safety compliant device with ASIL-B rating.