LT8672 Series

Active Rectifier Controller with Reverse Protection

Catalog

Active Rectifier Controller with Reverse Protection

Part	Input Type	Operating Temperature [Min]	Operating Temperature [Max]	Gate Type	Supplier Device Package	Channel Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Drivers	Mounting Type	Package / Case	Package / Case [x]	Package / Case [x]	Qualification	Current - Peak Output (Source, Sink) [custom]	Current - Peak Output (Source, Sink) [custom]	Grade
Analog Devices LT8672EDDB#TRPBF	Non-Inverting	-40 °C	125 ¯C	N-Channel MOSFET	10-DFN (3x2)	Single	3 V	42 V	1	Surface Mount	10-WFDFN Exposed Pad
Analog Devices LT8672EMS#PBF	Non-Inverting	-40 °C	125 ¯C	N-Channel MOSFET	10-MSOP	Single	3 V	42 V	1	Surface Mount	10-MSOP 10-TFSOP	3 mm	0.118 in
Analog Devices LT8672JMS#TRPBF	Non-Inverting	-40 °C	150 °C	N-Channel MOSFET	10-MSOP	Single	3 V	42 V	1	Surface Mount	10-MSOP 10-TFSOP	3 mm	0.118 in	AEC-Q100	-50 mA	300 mA	Automotive
Analog Devices LT8672JDDBM#WTRPBF	Non-Inverting	-40 °C	150 °C	N-Channel MOSFET	10-DFN (3x2)	Single	3 V	42 V	1	Surface Mount	10-WFDFN Exposed Pad			AEC-Q100	50 mA	50 mA	Automotive
Analog Devices LT8672JDDB#TRMPBF	Non-Inverting	-40 °C	150 °C	N-Channel MOSFET	10-DFN (3x2)	Single	3 V	42 V	1	Surface Mount	10-WFDFN Exposed Pad
Analog Devices LT8672JMS#PBF	Non-Inverting	-40 °C	150 °C	N-Channel MOSFET	10-MSOP	Single	3 V	42 V	1	Surface Mount	10-MSOP 10-TFSOP	3 mm	0.118 in	AEC-Q100	-50 mA	300 mA	Automotive

Catalog

Active Rectifier Controller with Reverse Protection

Key Features

• AEC-Q100 Qualified for Automotive Applications

• Reverse Input Protection to –40V

• Improved Performance Compared to a Schottky DiodeReduce Power Dissipation by >90%Reduce Drop to 20mV

• Reduce Power Dissipation by >90%

• Reduce Drop to 20mV

• Ultrafast Transient ResponseRectifies 6VP-PUp to 50kHzRectifies 2VP-PUp to 100kHz

• Rectifies 6VP-PUp to 50kHz

• Rectifies 2VP-PUp 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

Description

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.ApplicationsAutomotive Battery ProtectionIndustrial SuppliesPortable Instrumentation