1 Features

• AEC-Q100 qualified with the following results:

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

ambient operating temperature TA

– Device HBM ESD classification level 2

– Device CDM ESD classification level C7B

• Wide supply voltage range: 1.9V to 42V

• VDD, SENSE, and RESET are rated to 42V

• Very low quiescent current: 850nA (typical)

• High threshold accuracy: 0.5% (typical)

• Fixed internal threshold voltages: 2.7V to 9.5V

• Adjustable voltage variant: 0.7V

• Capacitor adjustable delay time with CTR pin

• Capacitor adjustable de-glitch time with CTS pin

• Undervoltage open-drain, active-low output

• Overvoltage open-drain, active-low and active-high

output

• Temperature range: –40°C to 125°C

• Small size: SOT5X3 (DRL)

2 Applications

• ADAS domain controller

• Automotive gateway

• Automotive head unit

• Digital cockpit processing unit

• Telematics control unit

• Driver monitoring

3 Description

The TPS3842-Q1 is an automotive 42V input voltage

supervisor with 850nA IDD and 1.5% accuracy, and

a fast detection time. The TPS3842-Q1 can be

connected directly to 12V battery for continuous

monitoring of undervoltage (UV) conditions or

overvoltage (OV) conditions. The TPS3842-Q1 comes

in a small DRL package for size constrained

applications. Built-in hysteresis on the SENSE pin

prevents false reset signals when monitoring a supply

voltage rail. 1%, 5%, and 10% hysteresis voltage

options are available to offer design flexibility to

support voltage transients.

SENSE is decoupled from VDD and can monitor

higher and lower voltages than VDD. Fixed

threshold variants provide accurate low-Iq voltage

monitoring. Adjustable threshold variants offer flexible

undervoltage threshold setting with external resistors.

TPS3842-Q1 offers capacitor programmable de-glitch

on the SENSE with the CTS pin and capacitor

programmable reset delay timing with the CTR pin.