1 Features

? ASIL-D Functional Safety-Compliant

– Development target for Functional Safety

applications

– Documentation to aid ISO 26262 system design

– Systematic capability up to ASIL D

– Hardware capability up to ASIL D

? AEC-Q100 qualified with the following results:

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

? Monitor state-of-the art SOCs

– ±6mV threshold accuracy (–40°C to +125°C)

– Input voltage range: 2.5V to 5.5V

– Undervoltage lockout (UVLO): 2.48V

– Low standby quiescent current: 200μA

– 6 channels with 2 remote sense (TPS389006-

Q1)

– 6 channels with 2 remote sense and Reset

output (TPS389R06-Q1)

– 8 channels (TPS389008-Q1)

– Fixed window threshold levels

? 5mV steps from 0.2V to 1.475V

? 20mV steps from 0.8V to 5.5V

? Miniature solution and minimal component cost

– 3mm x 3mm QFN package

– Adjustable glitch immunity via I2C

– User adjustable voltage threshold levels via I2C

? Designed for safety applications

– Active-low open-drain NIRQ output

– Active-low open-drain NRST output

(TPS389R0-Q1)

– Built-in 8-bit ADC for real-time voltage readouts

– Cyclic Redundancy Checking (CRC)

– Packet Error Checking (PEC)

– Sequence and fault logging

? Sync function for rail tagging

– Connect with a multichannel sequencer for

sequencing functionality

2 Applications

? Advanced driver assistance system (ADAS)

? Sensor fusion

3 Description

The TPS389006/08-Q1 device is an ASIL-D compliant

six/eight-channel window supervisor IC with two

remote sense pins (six channel version) available in a

16-pin 3mm x 3mm QFN package. The TPS389R06-

Q1 device is a six channel window supervisor IC with

2 remote sense pins and a Reset output. This high

accuracy multichannel voltage supervisor is designed

for systems that operate on low-voltage supply rails

and have narrow margin supply tolerances.

Remote sense pins enable a highly accurate voltage

measurement on the high current core rail by

accounting for voltage drop across PCB traces. I2C

functionality gives flexibility in selecting thresholds,

reset delays, glitch filters, and pin functionality. The

internal glitch immunity and noise filters eliminate

the need for external RC components to reduce

false resets resulting from power transients. In

addition, 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.

This device offers CRC error checking, sequence

logging during turn ON or turn OFF, and a builtin

ADC for voltage readouts to provide redundant

error checking. In addition, TPS389006 offers a sync

feature for tagging the rails as the device powers

up. The TPS389006 device also pairs with TI's powersupply

sequencer TPS38700 to enable proper poweron

sequence in addition to voltage monitoring for

SIL-3 level compliance.