LTC4381

RECOMMENDED FOR NEW DESIGNS

Low Quiescent Current eFuse with Surge Protection

Data Sheet (Rev. B) Product Selection Table

Part Models: 8
1ku List Price: Starting From $4.50

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Part Details

Withstands Surge Voltages Up to 100V
Internal 9mΩ N-Channel MOSFET
Guaranteed Safe Operating Area: 20ms at 70V, 1A
Low Quiescent Current: 6μA Operating
Operates Through Automobile Cold Crank
Wide Operating Voltage Range: 4V to 72V
No Input TVS Needed
Overcurrent Protection
Selectable Internal 28.5V/47V or Adjustable Output Clamp Voltage

Reverse Input Protection to –60V
Adjustable Turn-On Threshold
Adjustable Fault Timer with MOSFET Stress Acceleration
Latchoff and Retry Options
Low Retry Duty Cycle During Faults
32-Lead DFN (7mm × 5mm) Package

Part Models: 8
1ku List Price: Starting From $4.50

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
LTC4381ADKE-1#PBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-1#TRPBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-2#PBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-2#TRPBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-3#PBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-3#TRPBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-4#PBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4381ADKE-4#TRPBF	32-Lead Plastic DFN (7mm × 5mm)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

Tools & Simulations

LTspice 1

LTC4381 - Power Monitor, Control, and Protection

Models for the following parts are available in LTspice:

LTC4381-1
LTC4381-2
LTC4381-3
LTC4381-4

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

LTC4381 6μA IQ Surge Stopper with 9mΩ MOSFET

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Product Details

The DC2713A circuit board enables evaluation of the LTC4381, low quiescent current surge stopper with 9mΩ MOSFET, in 12V to 48V applications. The LTC4381 clamps the output voltage, permitting the load to operate safely through 100V transients and load dump surges such as ISO 16750-2 Test A. Current limiting protects the input supply from output overload and short-circuits. In the presence of a sustained input overvoltage or output overload, the LTC4381 shuts off after a delay to protect the internal power MOSFET.

DC2713A is available in four assembly options, from DC2713A-A to DC2713A-D. DC2713A-A/DC2713A-B employ a jumper to set the output clamp voltage to either 28.5V or 47V, to suit 12V or 24V/28V systems. DC2713A-C/DC2713A-D clamp the output to 66.5V for 48V applications. DC2713A-A/DC2713A-C latch off after a fault, whereas DC2713A-B/DC2713A-D automatically restart after a cool down delay.