Ideal diode/ORing controllers

Improve efficiency and performance in automotive battery input protection and power supply ORing applications

parametric-filterView all products
Our ideal diode and ORing controllers offer space-saving and scalable solutions to protect your system against reverse voltage or reverse current. These devices significantly reduce the energy typically lost across the forward voltage drop of traditional discrete silicon or Schottky diodes.

Browse by category

Select by type
Reverse polarity protectors

Ideal for P-FET replacement applications that need reverse polarity protection without reverse current blocking

Ideal diode controller

Ideal for discrete diode replacement for applications that need reverse polarity protection and reverse current blocking

Featured ideal diodes and ORing controllers

LM7480 NEW

3-V to 65-V back-to-back NFET ideal diode controller, -55°C to 125°C

Approx. price (USD) 1ku | 2
LM7481 NEW

3-V to 65-V back-to-back NFET ideal diode controller with higher gate drive, -55°C to 125°C

Approx. price (USD) 1ku | 2.25
LM74900-Q1 NEW

Automotive ideal diode with circuit breaker, under and overvoltage protection with fault output

Approx. price (USD) 1ku | 1.4
LM74910-Q1 NEW

Automotive ideal diode with circuit breaker, 200-kHz ACS and under and overvoltage protection

Approx. price (USD) 1ku | 1.48
LM74722-Q1 NEW

Automotive, low IQ ideal diode controller with 200-khz active rectification and load dump protection

Approx. price (USD) 1ku | 0.962
LM74721-Q1 NEW

Automotive, TVS less low IQ reverse battery protection ideal diode controller, active rectification

Approx. price (USD) 1ku | 0.938

Benefits of ideal diode & ORing controllers

checkmark

Power efficiency    

Reduce the energy loss from traditional discrete or Schottky diodes with low voltage drop, low IQ and thermal optimization.

checkmark

Protection

Improve system reliability with comprehensive power path and redundant power supply protection such as reverse polarity protection, reverse current blocking and load dump and surge protection.

checkmark

Space saving

Optimize your system with scalable controllers or fully integrated ideal diodes featuring an N-FET controller, integrated charge pump or integrated FET.

Technical resources

Application note
Application note
Basics of Ideal Diodes (Rev. B)
Read how our ideal diode controllers overcome the common limitations of Schottky diodes or P-channel MOSFETs used for traditional input protection or ORing applications.
document-pdfAcrobat PDF
Application note
Application note
Six System Architectures With Robust Reverse Battery Protection
New automotive trends are demanding higher efficiency and power density in front-end power systems. Explore how the new LM74800-Q1 B2B FET ideal diode controller simplifies common design architectures.
document-pdfAcrobat PDF
Application note
Application note
Eliminate the Voltage Drop and Save Power: An Ideal Diode (Rev. A)
In applications like smart eMeters or thermostats, backup batteries or redundant power supplies may be leveraged to reduce system downtime. See how the LM66100 can be used to block reverse current with a low-forward voltage drop.
document-pdfAcrobat PDF

Design & development resources

Evaluation board
LM74700-Q1 3.2-V to 65-V, 80-μA IQ automotive ideal diode controller (DDF package) evaluation module

The LM74700DDFEVM helps designers evaluate the operation and performance of the LM74700-Q1 3.2-V to 65-V, 80-μA IQ automotive ideal diode controller (DDF package). This evaluation module demonstrates how an N-channel power MOSFET can emulate a very-low forward voltage diode with low IQ and (...)

Evaluation board
LM74500-Q1 3.2-V to 65-V, 80-μA IQ reverse polarity protection controller evaluation module

The LM74500-Q1 evaluation module (LM74500Q1EVM) helps designers evaluate the operation and performance of the LM74500-Q1 reverse polarity protection controller. This evaluation module demonstrates how an N-channel power MOSFET can be used to realize input reverse voltage protection with low IQ (...)

Reference design
Automotive transient and overcurrent protection filter reference design
This reference design showcases a protection system for voltage and current transient events typically found in automotive systems. This reference design optimizes functionality, size and protection capabilities while not sacrificing power delivery for premium audio amplifiers.

Reference designs related to Ideal diode/ORing controllers

Use our reference design selection tool to find designs that best match your application and parameters.