LT8672 - Active Rectifier Controller with Reverse Protection
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Typical Application

LT8672 Typical Application
LT8672 Typical Application


The LT®8672 is an active rectifier controller for reverse input protection. It drives an external N-channel MOSFET to replace a power Schottky diode. Its very low quiescent current and fast transient response meet the tough requirements in automotive applications where AC input signals of up to 100kHz are present. These signals are rectified with minimum power dissipation on the external FET, simplifying thermal management on the PCB.

With a drop of only 20mV, the LT8672 solution eases the minimum input voltage requirement during cold crank and start-stop, allowing simpler and more efficient circuits. If the input power source fails or is shorted, a fast turn-off minimizes reverse current transients. An available shutdown mode reduces the quiescent current to 3.5μA.

An integrated auxiliary boost regulator provides the required boost voltage to turn the external FET fully on. A power good pin signals when the external FET is ready to take load current.



LT8672 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LT8672IMS#PBF MSOP 10 I $3.07 $2.15
LT8672HMS#PBF MSOP 10 H $3.43 $2.40
LT8672IMS#TRPBF MSOP 10 I $3.13 $2.21
LT8672HMS#TRPBF MSOP 10 H $3.49 $2.46
LT8672EMS#PBF MSOP 10 E $2.79 $1.95
LT8672EMS#TRPBF MSOP 10 E $2.85 $2.01
* 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
DC2548A LT8672EMS Demo Board | VIN = -15V to 35V, Up to 5A Output $345.00