LT8672

RECOMMENDED FOR NEW DESIGNS

Active Rectifier Controller with Reverse Protection

Data Sheet (Rev. E) Product Selection Table

Part Models: 30
1ku List Price: Starting From $1.65

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Overview

AEC-Q100 Qualified for Automotive Applications
Reverse Input Protection to –40V
Improved Performance Compared to a Schottky Diode
- Reduce Power Dissipation by >90%
- Reduce Drop to 20mV
Ultrafast Transient Response
- Rectifies 6V_P-P Up to 50kHz
- Rectifies 2V_P-P Up to 100kHz

Wide Operating Voltage Range: 3V to 42V
Low 20µA Quiescent Current in Operation
Low 3.5µA Shutdown Current
Accurate 1.21V Enable Pin Threshold
Small 10-Lead MSOP Package, 10-Lead 3mm × 2mm DFN Package and 3mm × 2mm Side-Wettable DFN Package

The LT8672 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.

Applications

Automotive Battery Protection
Industrial Supplies
Portable Instrumentation

Part Models: 30
1ku List Price: Starting From $1.65

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT8672EDDB#TRMPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EDDB#TRPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EDDBM#WTRMPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EDDBM#WTRPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EMS#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672EMS#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HDDB#TRMPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HDDB#TRPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HMS#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672HMS#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IDDB#TRMPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IDDB#TRPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IDDBM#WTRMPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IDDBM#WTRPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IMS#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672IMS#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JDDB#TRMPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JDDB#TRPBF	10-lead DFN (3 mm x 2mm x 0.75 mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JDDBM#WTRMPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JDDBM#WTRPBF	10-Lead Plastic SIDE WETTABLE DFN (3mm × 2mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JMS#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT8672JMS#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 22, 2024 - 24_0224 Pin 1 Chamfer Improvement on 10L-LFCSP for LT8604, LT8618, LT8672
		PCN24_0224_Form Material_Report Delta Qualification Matrix Datasheet Specification Comparison Detailed Change Description
LT8672EDDBM#WTRMPBF	PRODUCTION
LT8672EDDBM#WTRPBF	PRODUCTION
LT8672IDDBM#WTRMPBF	PRODUCTION
LT8672IDDBM#WTRPBF	PRODUCTION
LT8672JDDBM#WTRMPBF	PRODUCTION
LT8672JDDBM#WTRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT8672EMS#PBF	PRODUCTION
LT8672EMS#TRPBF	PRODUCTION
LT8672HMS#PBF	PRODUCTION
LT8672HMS#TRPBF	PRODUCTION
LT8672IMS#PBF	PRODUCTION
LT8672IMS#TRPBF	PRODUCTION
LT8672JMS#PBF	PRODUCTION
LT8672JMS#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LT8672EMS#PBF	PRODUCTION
LT8672EMS#TRPBF	PRODUCTION
LT8672EMS#WPBF	PRODUCTION
LT8672EMS#WTRPBF	PRODUCTION
LT8672HMS#PBF	PRODUCTION
LT8672HMS#TRPBF	PRODUCTION
LT8672HMS#WPBF	PRODUCTION
LT8672HMS#WTRPBF	PRODUCTION
LT8672IMS#PBF	PRODUCTION
LT8672IMS#TRPBF	PRODUCTION
LT8672IMS#WPBF	PRODUCTION
LT8672IMS#WTRPBF	PRODUCTION
LT8672JMS#PBF	PRODUCTION
LT8672JMS#TRPBF	PRODUCTION
LT8672JMS#WPBF	PRODUCTION
LT8672JMS#WTRPBF	PRODUCTION
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT8672EMS#WPBF	PRODUCTION
LT8672EMS#WTRPBF	PRODUCTION
LT8672HMS#WPBF	PRODUCTION
LT8672HMS#WTRPBF	PRODUCTION
LT8672IMS#WPBF	PRODUCTION
LT8672IMS#WTRPBF	PRODUCTION
LT8672JMS#WPBF	PRODUCTION
LT8672JMS#WTRPBF	PRODUCTION
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT8672EMS#WPBF	PRODUCTION
LT8672EMS#WTRPBF	PRODUCTION
LT8672HMS#WPBF	PRODUCTION
LT8672HMS#WTRPBF	PRODUCTION
LT8672IMS#WPBF	PRODUCTION
LT8672IMS#WTRPBF	PRODUCTION
LT8672JMS#WPBF	PRODUCTION
LT8672JMS#WTRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Tools & Simulations

LTspice 1

LT8672 Demo Circuit - 12V, 5A Automotive Reverse Battery Protection

Models for the following parts are available in LTspice:

LT8672

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LT8672EMS Demo Board | VIN = –15V to 35V, Up to 5A Output

Buy Now View Details

Product Details

Demonstration circuit 2548A is an active rectifier with reverse protection featuring the LT8672. The demo board is designed for 5A load current. The input voltage range of the LT8672 is –40V to +42V. Two clamping diodes, D1 and D2, are used on the board to protect the IC from overvoltage spikes at the input, thus limiting the application’s DC input voltage range to –15V and +35V.

Resources

DC2548A - Demo Manual
10/31/2017

DC2548A - Schematics
10/31/2017

DC2548A - Design Files
10/31/2017

Reference Designs

Knightrider Zynq Ultrascale +MPSOC Automotive Power Delivery Board - Top View

Automotive ASIL-D Compliant Power Delivery Board

View Detailed Reference Design

Features and Benefits

Xilinx Zynq^® UltraScale+™ devices are the industry’s only cost-optimized FPGAs based on an advanced, production-proven 16nm architecture for best-in-class performance/watt.

Analog Devices, Inc. supports ASIL-D compliant automotive power delivery solutions for the Xilinx Zynq UltraScale+ MPSOC. The Knightrider board demonstrates the best-in-class power management supporting ASIL-D compliant solutions for functional safety.

Monolithic solutions are used to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated discrete solutions optimized for cost, efficiency and foot print.

ADI provides supporting documentation including power schematics, layout, LTpowerPlanner^® and applicable LTpowerPlay^® configuration files to enable you to validate the power solution for your application seamlessly.

For a complete list power designs and use cases, please contact your local FAE.

Key Power for full management devices are used as follows: