Specification	LTC4381ADKE-4#TRPBF

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
Sensing Method	High-Side
Supplier Device Package	32-DFN (7x5)
Voltage - Input [Max]	72 V
Voltage - Input [Min]	4 V

LTC4381 Series

Low Quiescent Current eFuse with Surge Protection

Part	Number of Circuits	Voltage - Clamping	Supplier Device Package	Technology	Mounting Type	Package / Case	Function	Voltage - Input [Min]	Voltage - Input [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Sensing Method	Current - Output
Analog Devices Inc./Maxim Integrated LTC4381CDKE-2#TRPBF	1	100 V	32-DFN (7x5)	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381HDKE-4#PBF	1	100 V	32-DFN (7x5)	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381ADKE-1#PBF			32-DFN (7x5)		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	80 V	-40 C	125 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381ADKE-4#TRPBF			32-DFN (7x5)		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	-40 C	125 °C	High-Side	500 mA
Analog Devices Inc./Maxim Integrated LTC4381ADKE-4#PBF			32-DFN (7x5)		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	-40 C	125 °C	High-Side	500 mA
Analog Devices Inc./Maxim Integrated LTC4381HDKE-4#TRPBF	1	100 V	32-DFN (7x5)	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381ADKE-3#PBF			32-DFN (7x5)		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	-40 C	125 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381ADKE-3#TRPBF			32-DFN (7x5)		Surface Mount	32-WFDFN Exposed Pad	Electronic Fuse	4 V	72 V	-40 C	125 °C	High-Side
Analog Devices Inc./Maxim Integrated LTC4381IDKE-4#PBF	1	100 V	32-DFN (7x5)	External Switch	Surface Mount	32-WFDFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4381HDKE-2#PBF	1	100 V	32-DFN (7x5)	External Switch	Surface Mount	32-WFDFN Exposed Pad

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	N/A	0	$ 5.63	1m+
	Tape & Reel (TR)	2500	$ 5.63	1m+

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

Documents

Technical documentation and resources

Datasheet

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

Package Drawing

DC2713A Demo Manual (Rev.0)

User Guide