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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 318

Monitor and protect automotive systems with integrated current sensing

Jon Munson

Abstract

The LT6100 and LTC6101 high side current-sense amplifiers, which simplify designs in the automotive environment, are described.

Keywords

Automotive electronics

current-sense amplifier

LT6100

LTC6101

Introduction

An automobile is an unforgiving environment for integrated circuits, where under-the-hood operating temperatures run from −40°C to 125°C and large transient excursions on the battery voltage bus are expected. In the past, electronics were part of the well-protected and centralized Engine Control Unit (ECU), but the trend is toward more distributed electronics. Electrically driven accessories and fault-protection monitoring ...

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