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
– ±6 mV threshold accuracy (–40°C to +125°C)
– Input voltage range: 2.5 V to 5.5 V
– Undervoltage lockout (UVLO): 2.48 V
– Low standby quiescent current: 200 μA
– 6 channels with 2 remote sense
– Fixed window threshold levels
• 5 mV steps from 0.2 V to 1.475 V
• 20 mV steps from 0.8 V to 5.5 V
• Miniature solution and minimal component cost
– 3 mm x 3 mm QFN package
– Adjustable glitch immunity via I2C
– User adjustable voltage threshold levels via I2C
• Designed for safety applications
– Active-low open-drain NIRQ output
– 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-Q1 device is an ASIL-D compliant
six-channel window supervisor IC with two remote
sense pins available in a 16-pin 3 mm x 3 mm QFN
package. 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, solution 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-Q1 offers
a sync feature for tagging rails as they come up.
TPS389006-Q1 device also pairs with TI's powersupply
sequencer TPS38700-Q1 to ensure proper
power-on sequence in addition to voltage monitoring
for ASIL-D level compliance.