New Product

ANALOG DEVICES INC. LTC4381 Low Quiescent Current Surge Stopper | New Product Brief

December 08, 2021 by Mouser Electronics

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

ANALOG DEVICES INC. LTC4381 Low Quiescent Current Surge Stopper

Analog Devices’ LTC4381 are an integrated solution for low quiescent current surge stopper applications that protect loads from high voltage transients

The low quiescent Current Surge Stoppers offer overvoltage protection by clamping the gate voltage of an internal 9 milliohm 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 guaranteed for 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 where the operating time in both overcurrent and overvoltage conditions is limited in accordance with MOSFET stress. 

The device's GATE pin drives back-to-back MOSFETs for reverse input protection, eliminating a Schottky diode solution's voltage drop and dissipation. 

For more information, visit

New Industry Products are a form of content that allows industry partners to share useful news, messages, and technology with All About Circuits readers in a way editorial content is not well suited to. All New Industry Products are subject to strict editorial guidelines with the intention of offering readers useful news, technical expertise, or stories. The viewpoints and opinions expressed in New Industry Products are those of the partner and not necessarily those of All About Circuits or its writers.