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Analog Circuit Design Volume Three by John Hamburger, Bob Dobkin

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Chapter 247

Hot Swap controller, MOSFET and sense resistor are integrated in a 5mm × 3mm DFN for accurate current limit and load current monitoring in tight spaces

Vladimir Ostrerov

Abstract

The LTC4217, which combines a Hot Swap controller, MOSFET and sense resistor in a 5mm 3mm DFN package for accurate current limit and load current monitoring in tight spaces, is described.

Keywords

Hot Swap controller

LTC4217

LT4217-12

Introduction

In general, a Hot Swap controller provides two important functions to boards that can be plugged and unplugged from a live backplane:

• It limits the potentially destructive inrush current when a board is plugged in.

• It acts as a circuit breaker, with the maximum current and maximum time at that current ...

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