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
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.
- Automotive Battery Protection
- Redundant Power Supplies
- Supply Holdup
- Telecom Infrastructure
- Computer Systems/Servers
- Solar Systems
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
R547 Reliability Data3/26/2018
Micropower Hot Swap Controller8/1/2014
Ideal Diodes and Prioritizers6/8/2018
Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions1/1/2017 LT Journal
Ideal Diode Combines 200V Busses4/1/2014 LT Journal
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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.