LTC4381ADKE-2#PBF

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Analog Devices Inc./Maxim Integrated

LOW QUIESCENT CURRENT EFUSE WITH SURGE PROTECTION

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LTC4381ADKE-2#PBF

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Analog Devices Inc./Maxim Integrated

LOW QUIESCENT CURRENT EFUSE WITH SURGE PROTECTION

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC4381 Series

The LTC4381 is an integrated solution for low quiescent current eFuse with an internal 9mΩ N-Channel MOSFET. Overvoltage protection is provided by clamping the gate voltage of an internal 9mΩ N-channel MOSFET to limit the output voltage to a safe value during overvoltage events such as load dump in automobiles. The MOSFET safe operating area is production tested and guaranteed for the stresses during high voltage transients. Fixed output clamp voltages are selectable for 12V and 24V/28V systems. For systems of any voltage up to 80V, use the adjustable clamp versions.Overcurrent protection is also provided. An internal multiplier generates a TMR pin current proportional to VDSand ID, so that operating time in both overcurrent and overvoltage conditions is limited in accordance with MOSFET stress.The GATE pin can drive back-to-back MOSFETs for reverse input protection, eliminating the voltage drop and dissipation of a Schottky diode solution. A low 6μA operating current permits use in always-on and battery powered applications.APPLICATIONSAutomotive 12V, 24V and 48V SystemAvionic/Industrial Surge ProtectionHot Swap/Live InsertionHigh Side Switch for Battery Powered SystemsAutomotive Load Dump Protection

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4381ADKE-2#PBF

Current - Output	500 mA
Function	Electronic Fuse
Mounting Type	Surface Mount
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package / Case	32-WFDFN Exposed Pad
Package Length	7 mm
Package Name	32-DFN
Package Width	5 mm
Sensing Method	High-Side
Voltage - Input (Maximum)	72 V
Voltage - Input (Minimum)	4 V

LTC4381 Series

Low Quiescent Current eFuse with Surge Protection

Part	Number of Circuits	Voltage - Clamping	Package Name	Package Width	Package Length	Technology	Mounting Type	Package / Case	Function	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Operating Temperature (Max)	Operating Temperature (Min)	Sensing Method	Current - Output
Analog Devices Inc./Maxim Integrated LTC4381CDKE-2#TRPBF	1	100 V	32-DFN	5 mm	7 mm	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381HDKE-4#PBF	1	100 V	32-DFN	5 mm	7 mm	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381ADKE-1#PBF			32-DFN	5 mm	7 mm		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	80 V	125 °C	-40 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381ADKE-4#TRPBF			32-DFN	5 mm	7 mm		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	125 °C	-40 °C	High-Side	500 mA
Analog Devices Inc./Maxim Integrated LTC4381ADKE-4#PBF			32-DFN	5 mm	7 mm		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	125 °C	-40 °C	High-Side	500 mA
Analog Devices Inc./Maxim Integrated LTC4381HDKE-4#TRPBF	1	100 V	32-DFN	5 mm	7 mm	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381ADKE-3#PBF			32-DFN	5 mm	7 mm		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	125 °C	-40 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381ADKE-3#TRPBF			32-DFN	5 mm	7 mm		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	125 °C	-40 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381IDKE-4#PBF	1	100 V	32-DFN	5 mm	7 mm	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381HDKE-2#PBF	1	100 V	32-DFN	5 mm	7 mm	External Switch	Surface Mount	32-WFDFN Exposed Pad

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC4381ADKE-2#PBF | Datasheet

Package Drawing - 32-Lead Plastic DFN (7mm × 5mm)

DC2713A Demo Manual (Rev.0)