LTC4359 - Ideal Diode Controller with Reverse Input Protection

Features

  • 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-Lead (2mm × 3mm) DFN and 8-Lead MSOP Packages

Typical Application

LTC4359 Typical Application
LTC4359 Typical Application

Description

The LTC®4359 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.

Packaging

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

DFN-6, MS-8

LTC4359 Package Drawing
LTC4359 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC4359CDCB#PBF DFN 6 C $3.00 View
LTC4359CDCB#TRMPBF DFN 6 C $3.00 $2.15 View
LTC4359CDCB#TRPBF DFN 6 C $3.00 $2.10 View
LTC4359CMS8#PBF MSOP 8 C $3.00 $2.10 View
LTC4359CMS8#TRPBF MSOP 8 C $2.16 View
LTC4359HDCB#PBF DFN 6 H $3.97 View
LTC4359HDCB#TRMPBF DFN 6 H $3.97 $2.83 View
LTC4359HDCB#TRPBF DFN 6 H $3.97 $2.78 View
LTC4359HMS8#PBF MSOP 8 H $3.97 $2.78 View
LTC4359HMS8#TRPBF MSOP 8 H $2.84 View
LTC4359IDCB#PBF DFN 6 I $3.45 View
LTC4359IDCB#TRMPBF DFN 6 I $3.45 $2.47 View
LTC4359IDCB#TRPBF DFN 6 I $3.45 $2.42 View
LTC4359IMS8#PBF MSOP 8 I $3.45 $2.42 View
LTC4359IMS8#TRPBF MSOP 8 I $2.48 View
Buy NowRequest Samples
* 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
DC1502A LTC4359DCB Demoboard: 12V, 20A Ideal Diode with Reverse Input Protection $75.00
DC1676A LTC4359DCB Demoboard: 28V, 20A Ideal Diode and Switch with Reverse Input Protection $75.00
Buy Now
Click here to view our complete list of demo boards

Applications

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

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Design Tools

LTspiceIV

LTspice IV is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice IV

Models for the following parts are available in LTspice IV:
LTC4359

Technical Support