LTC4353
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4353

Dual Low Voltage Ideal Diode Controller

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $4.13
Features
  • Low Loss Replacement for Power Diodes
  • Controls N-Channel MOSFETs
  • 0V to 18V Supply ORing or Holdup
  • 1μs Gate Turn-On and Turn-Off Time
  • Enable Inputs
  • MOSFET On-Status Outputs
  • 16-Lead MSOP and DFN (4mm × 3mm) Packages
Additional Details
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The LTC4353 controls external N-channel MOSFETs to implement an ideal diode function. It replaces two high power Schottky diodes and their associated heat sinks, saving power and board area. The ideal diode function permits low loss power supply ORing and supply holdup applications.

The LTC4353 regulates the forward-voltage drop across the MOSFET to ensure smooth current transfer in diode-OR applications. A fast turn-on reduces the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.

The controller operates with supplies from 2.9V to 18V. If both supplies are below 2.9V, an external supply is needed at the VCC pin. Enable inputs can be used to turn off the MOSFET and put the controller in a low current state. Status outputs indicate whether the MOSFETs are on or off.

Applications

  • Redundant Power Supplies
  • Supply Holdup
  • High Availability Systems and Servers
  • Telecom and Network Infrastructure
Part Models 8
1ku List Price Starting From $4.13

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4353CDE#PBF
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LTC4353IDE#PBF
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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4353CMS#PBF

PRODUCTION

LTC4353CMS#TRPBF

PRODUCTION

LTC4353IMS#PBF

PRODUCTION

LTC4353IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4353CMS#PBF

PRODUCTION

LTC4353CMS#TRPBF

PRODUCTION

LTC4353IMS#PBF

PRODUCTION

LTC4353IMS#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4353CMS#PBF

PRODUCTION

LTC4353CMS#TRPBF

PRODUCTION

LTC4353IMS#PBF

PRODUCTION

LTC4353IMS#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4353CMS#PBF

PRODUCTION

LTC4353CMS#TRPBF

PRODUCTION

LTC4353IMS#PBF

PRODUCTION

LTC4353IMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

Tools & Simulations

Tools & Simulations 1

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.

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