TPS3842-Q1中文资料德州仪器数据手册PDF规格书

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 programmable adjustable delay time

with CTR pin

• Capacitor programmable deglitch delay time with

CTS pin

• Open-drain, active-low output

• Temperature range: –40°C to 125°C

• Small size: SOT563 (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. The

TPS3842-Q1 comes in a small DRL package for

size constraint 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 offers capacitor programmable de-glitch

on the SENSE with the CTS pin and capacitor

programmable reset delay timing with the CTR pin.