LTC4372IDD#TRPBF

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Analog Devices Inc./Maxim Integrated

LOW QUIESCENT CURRENT IDEAL DIODE CONTROLLER

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LTC4372IDD#TRPBF

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Analog Devices Inc./Maxim Integrated

LOW QUIESCENT CURRENT IDEAL DIODE CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC4372 Series

The LTC4372/LTC4373are positive high voltage ideal diode controllers that drive an external N-channel MOSFET to replace a Schottky diode. They control the forward voltage drop across the MOSFET to ensure current delivery or current transfer from one path to the other even at light loads.A 5μA operating current achieves high efficiency for intermittent load applications or always-on backup power supplies. If a power source fails or is shorted, a fast turn-off minimizes reverse current transients. The LTC4372/LTC4373 control back-to-back N-channel MOSFETs for inrush current control and load switching.The LTC4372’s SHDN pin keeps the MOSFET off and reduces the quiescent current to 3.5μA. The LTC4373 has a UV pin for undervoltage monitoring while theUVOUTpin provides hysteresis adjustment and status information. During undervoltage, the back-to-back MOSFETs are cut off and quiescent current reduces to 0.5μA.APPLICATIONSAutomotive Battery ProtectionRedundant Power SuppliesPortable InstrumentationSolar Powered SystemsEnergy Harvesting ApplicationsSupply Holdup

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4372IDD#TRPBF

Applications	Redundant Power Supplies
Current - Output (Max)	10 µA
Current - Supply	5 µA
Delay Time - OFF	500 ns
Delay Time - ON	500 µs
FET Type	N-Channel
Grade	Automotive
Input Ratio	1
Internal Switch(s)	No
Mounting Type	Surface Mount
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Ratio	1
Package / Case	8-WFDFN Exposed Pad
Package Length	3 mm
Package Name	8-DFN
Package Width	3 mm
Type	N+1 ORing Controller
Voltage - Supply (Maximum)	80 V
Voltage - Supply (Minimum)	2.5 V

LTC4372 Series

Low Quiescent Current Ideal Diode Controller

Part	Internal Switch(s)	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Current - Supply	Operating Temperature (Max)	Operating Temperature (Min)	Current - Output (Max)	Package Name	Mounting Type	Package Width	Package Length	Grade	Delay Time - ON	Delay Time - OFF	Output Ratio	Input Ratio	Applications	FET Type	Type	Package / Case
Analog Devices Inc./Maxim Integrated LTC4372HMS8#PBF	No	80 V	2.5 V	5 µA	125 °C	-40 °C	10 µA	8-MSOP 8-TSSOP 8-MSOP	Surface Mount	3 mm	0.118 in	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller
Analog Devices Inc./Maxim Integrated LTC4372IMS8#PBF	No	80 V	2.5 V	5 µA	85 °C	-40 °C	10 µA	8-MSOP 8-TSSOP 8-MSOP	Surface Mount	3 mm	0.118 in	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller
Analog Devices Inc./Maxim Integrated LTC4372HDD#PBF	No	80 V	2.5 V	5 µA	125 °C	-40 °C	10 µA	8-DFN	Surface Mount	3 mm	3 mm	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller	8-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4372CDD#TRPBF	No	80 V	2.5 V	5 µA	70 °C	0 °C	10 µA	8-DFN	Surface Mount	3 mm	3 mm	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller	8-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4372IMS8#TRPBF	No	80 V	2.5 V	5 µA	85 °C	-40 °C	10 µA	8-MSOP 8-TSSOP 8-MSOP	Surface Mount	3 mm	0.118 in	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller
Analog Devices Inc./Maxim Integrated LTC4372HDD#TRPBF	No	80 V	2.5 V	5 µA	125 °C	-40 °C	10 µA	8-DFN	Surface Mount	3 mm	3 mm	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller	8-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4372IDD#TRPBF	No	80 V	2.5 V	5 µA	85 °C	-40 °C	10 µA	8-DFN	Surface Mount	3 mm	3 mm	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller	8-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4372CMS8#PBF	No	80 V	2.5 V	5 µA	70 °C	0 °C	10 µA	8-MSOP 8-TSSOP 8-MSOP	Surface Mount	3 mm	0.118 in	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller
Analog Devices Inc./Maxim Integrated LTC4372HMS8#TRPBF	No	80 V	2.5 V	5 µA	125 °C	-40 °C	10 µA	8-MSOP 8-TSSOP 8-MSOP	Surface Mount	3 mm	0.118 in	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller
Analog Devices Inc./Maxim Integrated LTC4372IDD#PBF	No	80 V	2.5 V	5 µA	85 °C	-40 °C	10 µA	8-DFN	Surface Mount	3 mm	3 mm	Automotive	500 µs	500 ns	1	1	Redundant Power Supplies	N-Channel	N+1 ORing Controller	8-WFDFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

LTC4372/LTC4373: Low Quiescent Current Ideal Diode Controller Data Sheet (Rev.A)