Alternative Parts

  • LTC4357
    LTC4357

    Positive High Voltage Ideal Diode Controller

  • LTC4358
    LTC4358

    5A Ideal Diode

Overview

Features and Benefits

  • 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

Product Details

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

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

Tools & Simulations

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.

LTspice

Models for the following parts are available in LTspice:

LTC4359

Product Recommendations

LTC4359 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

LTC4359 Discussions

RE: Switching power (LTC4359)
15 week(s) ago in Power By Linear
RE: Ideal diode load switch turn-on speed?
20 week(s) ago in Power By Linear
Ideal diode load switch turn-on speed?
22 week(s) ago in Power By Linear
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.