Power Management Power Control PowerPath Controllers & Ideal Diodes
Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) Power Management

LTC4358 - 5A Ideal Diode

LTC4359 - Ideal Diode Controller with Reverse Input Protection

LTC4357 - Positive High Voltage Ideal Diode Controller

Features

  • Reduces Power Dissipation by Replacing a Power Schottky Diode with an N-Channel MOSFET
  • 0.5μs Turn-Off Time Limits Peak Fault Current
  • Wide Operating Voltage Range: 9V to 80V
  • Smooth Switchover without Oscillation
  • No Reverse DC Current
  • Available in 6-Lead (2mm × 3mm) DFN and 8-Lead MSOP Packages

Typical Application

LTC4357 Typical Application
LTC4357 Typical Application

Description

The LTC®4357 is a positive high voltage ideal diode controller that drives an external N-channel MOSFET to replace a Schottky diode. When used in diode-OR and high current diode applications, the LTC4357 reduces power consumption, heat dissipation, voltage loss and PC board area.

The LTC4357 easily ORs power sources to increase total system reliability. In diode-OR applications, the LTC4357 controls the forward voltage drop across the MOSFET to ensure smooth current transfer from one path to the other without oscillation. If the power source fails or is shorted, a fast turn-off minimizes reverse current transients.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

DFN-6, MS-8

LTC4357 Package Drawing
LTC4357 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC4357CDCB#PBF DFN 6 C $2.43 View
LTC4357CDCB#TRMPBF DFN 6 C $2.43 $1.75 View
LTC4357CDCB#TRPBF DFN 6 C $2.43 $1.70 View
LTC4357CMS8#PBF MSOP 8 C $2.43 $1.70 View
LTC4357CMS8#TRPBF MSOP 8 C $1.75 View
LTC4357HDCB#PBF DFN 6 H $3.36 View
LTC4357HDCB#TRMPBF DFN 6 H $3.36 $2.40 View
LTC4357HDCB#TRPBF DFN 6 H $3.36 $2.35 View
LTC4357HMS8#PBF MSOP 8 H $3.36 $2.35 View
LTC4357HMS8#TRPBF MSOP 8 H $2.41 View
LTC4357IDCB#PBF DFN 6 I $2.91 View
LTC4357IDCB#TRMPBF DFN 6 I $2.91 $2.09 View
LTC4357IDCB#TRPBF DFN 6 I $2.91 $2.04 View
LTC4357IMS8#PBF MSOP 8 I $2.91 $2.04 View
LTC4357IMS8#TRPBF MSOP 8 I $2.09 View
LTC4357MPMS8 MSOP 8 MP $7.29 $5.10 View
LTC4357MPMS8#PBF MSOP 8 MP $7.29 $5.10 View
LTC4357MPMS8#TR MSOP 8 MP $5.16 View
LTC4357MPMS8#TRPBF MSOP 8 MP $5.16 View
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1203A LTC4357 Positive High Voltage Ideal Diode Controller $50.00
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Click here to view our complete list of demo boards

Applications

  • N + 1 Redundant Power Supplies
  • High Availability Systems
  • AdvancedTCA Systems
  • Telecom Infrastructure
  • Automotive Systems

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LTC4357

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