TPS3842-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• Wide supply voltage range: 1.9V to 42V

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

• 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

• Factory Automation

• Motor Drives

• Power Devivery

• Enterprise Systems

• Grid Infrastructure

3 Description

The TPS3842 is a 42V voltage supervisor with 850nA

IDD and 0.5% accuracy, and a fast detection time.

This device can be connected directly to 12V / 24V

voltage rail for continuous monitoring of undervoltage

(UV) conditions. The TPS3842 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 programable de-glitch

on the SENSE with the CTS pin and capacitor

programmable reset delay timing with the CTR pin.