LTC4359
Ideal Diode Controller with Reverse Input Protection
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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
- AEC-Q100 Qualified for Automotive Applications
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 Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
Documentation & Resources
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R547 Reliability Data3/26/2018PDF146 K
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DC1676A - Demo Manual3/25/2013PDF514K
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DC1502A - Demo Manual12/4/2012PDF817K
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Micropower Hot Swap Controller8/1/2014PDF699K
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Ideal Diodes and Prioritizers6/8/2018PDF1 M
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Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions1/1/2017 LT Journal
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Ideal Diode Combines 200V Busses4/1/2014 LT Journal
Tools & Simulations
LTspice
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Models for the following parts are available in LTspice:
LTC4359
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.
PCN-PDN Information
Support & Discussions
LTC4359 Discussions
RE: Advice selecting correct MOSFET for LTC4359
3 day(s) ago in Power Management
RE: LTC4359 MOSFET becoming Damaged
6 week(s) ago in Power Management
Sample & Buy
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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.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.