LTC4359

RECOMMENDED FOR NEW DESIGNS

Ideal Diode Controller with Reverse Input Protection

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Overview

  • Reduces Power Dissipation by Replacing a Power Schottky Diode
  • Wide Operating Voltage Range: 4V to 80V
  • Reverse Input Protection to – 40V
  • Low 9µA Shutdown Current
  • Low 150μA Operating Current
  • Smooth Switchover without Oscillation
  • Controls Single or Back-to-Back N-Channel MOSFETs
  • Available in 6-Pin (2mm × 3mm) DFN, 8-Lead MSOP and 8-Lead SO Packages
  • AEC-Q100 Qualified for Automotive Applications

The LTC4359 is a positive high voltage ideal diode controller that drives an external N-channel MOSFET to replace a Schottky diode. It controls the forward-voltage drop across the MOSFET to ensure smooth current delivery without oscillation even at light loads. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. A shutdown mode is available to reduce the quiescent current to 9μA for load switch and 14µA for ideal diode applications.

When used in high current diode applications, the LTC4359 reduces power consumption, heat dissipation, voltage loss and PC board area. With its wide operating voltage range, the ability to withstand reverse input voltage, and high temperature rating, the LTC4359 satisfies the demanding requirements of both automotive and telecom applications. The LTC4359 also easily ORs power sources in systems with redundant supplies.

Applications

  • Automotive Battery Protection
  • Redundant Power Supplies
  • Supply Holdup
  • Telecom Infrastructure
  • Computer Systems/Servers
  • Solar Systems

LTC4359
Ideal Diode Controller with Reverse Input Protection
LTC4359 Application Circuit LTC4359 Pin Configuration LTC4359 Pin Configuration LTC4359 Pin Configuration LTC4359 Performance Graph
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Documentation

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 2
LTC4364 RECOMMENDED FOR NEW DESIGNS Surge Stopper with Ideal Diode
LT4363 RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice


Models for the following parts are available in LTspice:

  • LTC4359
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
DC1676A

LTC4359DCB Demoboard: 28V, 20A Ideal Diode and Switch with Reverse Input Protection

Product Details

DC1676A: Demo Board for LTC4359 Ideal Diode Controller with Reverse Input Protection.


 


eval board
DC1502A

LTC4359DCB Demo Board | 12V, 20A Ideal Diode with Reverse Input Protection

Product Details

DC1502A: Demo Board for the LTC4359 Ideal Diode Controller with Reverse Input Protection.

DC1676A
LTC4359DCB Demoboard: 28V, 20A Ideal Diode and Switch with Reverse Input Protection
DC1676A Demo Board DC1676A Demo Board DC1676A Demo Board DC1676A Demo Board DC1676A - Schematic
DC1502A
LTC4359DCB Demo Board | 12V, 20A Ideal Diode with Reverse Input Protection
DC1502A Demo Board DC1502A Demo Board DC1502A Demo Board DC1502A Demo Board DC1502A - Schematic

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