LTC1647

PRODUCTION

Dual Hot Swap Controllers

Data Sheet Product Selection Table
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Overview

  • Allows Safe Board Insertion and Removal from a Live Backplane
  • Programmable Electronic Circuit Breaker
  • FAULT Output Indication
  • Programmable Supply Voltage Power-Up Rate
  • High Side Drive for External MOSFET Switches
  • Controls Supply Voltages from 2.7V to 16.5V
  • Undervoltage Lockout

The LTC1647-1/LTC1647-2/LTC1647-3 are dual Hot Swap™ controllers that permit a board to be safely inserted and removed from a live backplane.

Using external N-channel MOSFETs, the board supply voltages can be ramped up at a programmable rate. A high side switch driver controls the MOSFET gates for supply voltages ranging from 2.7V to 16.5V. A programmable electronic circuit breaker protects against overloads and shorts. The ON pins are used to control board power or clear a fault.

The LTC1647-1 is a dual Hot Swap controller with a common VCC pin, separate ON pins and is available in an SO-8 package. The LTC1647-2 is similar to the LTC1647-1 but combines a fault status flag with automatic retry at the ON pins and is also available in the SO-8 package. The LTC1647-3 has individual VCC pins, ON pins and FAULT status pins for each channel and is available in a 16-lead narrow SSOP package.

Applications

  • Hot Board Insertion
  • Electronic Circuit Breaker
  • Portable Computer Device Bays
  • Hot Plug Disk Drive
LTC1647
Dual Hot Swap Controllers
Dual Motherboard Resident Hot Swap Controller ON/OFF Sequence Product Package 1 Product Package 2 Product Package 3
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 2

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 2
LTC4226
PRODUCTION Wide Operating Range Dual Hot Swap Controller
LTC4221
RECOMMENDED FOR NEW DESIGNS Dual Hot Swap Controller/Power Sequencer with Dual Speed, Dual Level Fault Protection
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC1647-1
  • LTC1647-2
  • LTC1647-3
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
DC1358A

OBSOLETE: LTC1647-1 | Dual Hot Swap Controller, 5V/5A Eval System

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Product Details

This evaluation board is obsolete and no longer recommended.

DC1358A
OBSOLETE: LTC1647-1 | Dual Hot Swap Controller, 5V/5A Eval System
DC1358A - Schematic

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