LTC4380

RECOMMENDED FOR NEW DESIGNS

Low Quiescent Current Surge Stopper

Data Sheet (Rev. C) Product Selection Table

Part Models: 64
1ku List Price: Starting From $2.99

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Overview

Low Quiescent Current: 8µA Operating
Withstands Surge Voltage Up to the MOSFET Limit
Wide Operating Voltage Range: 4V to 72V
Overcurrent Protection
Selectable Internal 31.5V/50V or Adjustable Gate Clamp Voltage
Reverse Input Protection to –60V

Adjustable Turn-On Threshold
Adjustable Fault Timer with MOSFET Stress Acceleration
Controls N-Channel MOSFET
Latchoff and Retry Options
Low Retry Duty Cycle During Faults
10-Pin DFN (3mm × 3mm) and MSOP Packages
AEC-Q100 Qualified for Automotive Applications

The LTC4380 low quiescent current surge stopper protects loads from high voltage transients. Overvoltage protection is provided by clamping the gate voltage of an external N-channel MOSFET to limit the output voltage to a safe value during overvoltage events such as load dump in automobiles. Fixed gate clamp voltages are selectable for 12V and 24V/28V systems. For systems of any voltage up to 72V, use the adjustable gate clamp versions. Overcurrent protection is also provided.

An internal multiplier generates a TMR pin current proportional to V_DS and I_D, 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 8µA operating current permits use in always-on and battery powered applications. An accurate ON pin comparator monitors the input supply for undervoltage (UV) conditions and also serves as a shutdown input, reducing the quiescent current to 6µA.

Applications

Automotive/Avionic/Industrial Surge Protection
Hot Swap, Live Insertion
High Side Switch for Battery Powered Systems
Automotive Load Dump Protection

Part Models: 64
1ku List Price: Starting From $2.99

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
LTC4380CDD-1#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-1#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-2#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-2#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-3#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-3#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-4#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CDD-4#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-2#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-2#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-3#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-3#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-4#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380CMS-4#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-1#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-1#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-2#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-2#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-3#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-3#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-4#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HDD-4#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-1#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-1#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-2#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-2#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-2#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-2#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-3#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-3#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-3#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-3#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-4#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-4#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-4#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380HMS-4#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-1#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-1#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-2#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-2#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-3#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-3#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-4#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IDD-4#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-1#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-1#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-2#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-2#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-2#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-2#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-3#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-3#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-3#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-3#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-4#PBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-4#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-4#WPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4380IMS-4#WTRPBF	10-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 17, 2025 - 25_0043 Change of Gold to Copper Wire and BOM (Automotive)
		PCN25_0043_Form Material_Report Delta Qualification Matrix Qualification Results Summary
LTC4380CDD-1#PBF	PRODUCTION
LTC4380CDD-1#TRPBF	PRODUCTION
LTC4380CDD-2#PBF	PRODUCTION
LTC4380CDD-2#TRPBF	PRODUCTION
LTC4380CDD-3#PBF	PRODUCTION
LTC4380CDD-3#TRPBF	PRODUCTION
LTC4380CDD-4#PBF	PRODUCTION
LTC4380CDD-4#TRPBF	PRODUCTION
LTC4380HDD-2#PBF	PRODUCTION
LTC4380HDD-2#TRPBF	PRODUCTION
LTC4380HDD-3#PBF	PRODUCTION
LTC4380HDD-3#TRPBF	PRODUCTION
LTC4380HDD-4#PBF	PRODUCTION
LTC4380HDD-4#TRPBF	PRODUCTION
LTC4380IDD-2#PBF	PRODUCTION
LTC4380IDD-2#TRPBF	PRODUCTION
LTC4380IDD-3#PBF	PRODUCTION
LTC4380IDD-3#TRPBF	PRODUCTION
LTC4380IDD-4#PBF	PRODUCTION
LTC4380IDD-4#TRPBF	PRODUCTION
Jun 6, 2025 - 25_0119 Bond Wire Change from Gold to Copper
		PCN25_0119_Form Material_Report Delta Qualification Matrix Qualification Results Summary
LTC4380CMS-1#PBF	PRODUCTION
LTC4380CMS-1#TRPBF	PRODUCTION
LTC4380CMS-2#PBF	PRODUCTION
LTC4380CMS-2#TRPBF	PRODUCTION
LTC4380CMS-3#PBF	PRODUCTION
LTC4380CMS-3#TRPBF	PRODUCTION
LTC4380CMS-4#PBF	PRODUCTION
LTC4380CMS-4#TRPBF	PRODUCTION
LTC4380HMS-1#PBF	PRODUCTION
LTC4380HMS-1#TRPBF	PRODUCTION
LTC4380HMS-1#WPBF	PRODUCTION
LTC4380HMS-1#WTRPBF	PRODUCTION
LTC4380HMS-2#PBF	PRODUCTION
LTC4380HMS-2#TRPBF	PRODUCTION
LTC4380HMS-2#WPBF	PRODUCTION
LTC4380HMS-2#WTRPBF	PRODUCTION
LTC4380HMS-3#PBF	PRODUCTION
LTC4380HMS-3#TRPBF	PRODUCTION
LTC4380HMS-3#WPBF	PRODUCTION
LTC4380HMS-3#WTRPBF	PRODUCTION
LTC4380HMS-4#WPBF	PRODUCTION
LTC4380HMS-4#WTRPBF	PRODUCTION
LTC4380IMS-1#PBF	PRODUCTION
LTC4380IMS-1#TRPBF	PRODUCTION
LTC4380IMS-1#WPBF	PRODUCTION
LTC4380IMS-1#WTRPBF	PRODUCTION
LTC4380IMS-2#PBF	PRODUCTION
LTC4380IMS-2#TRPBF	PRODUCTION
LTC4380IMS-2#WPBF	PRODUCTION
LTC4380IMS-2#WTRPBF	PRODUCTION
LTC4380IMS-3#PBF	PRODUCTION
LTC4380IMS-3#TRPBF	PRODUCTION
LTC4380IMS-3#WPBF	PRODUCTION
LTC4380IMS-3#WTRPBF	PRODUCTION
LTC4380IMS-4#WPBF	PRODUCTION
LTC4380IMS-4#WTRPBF	PRODUCTION
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4380CMS-1#PBF	PRODUCTION
LTC4380CMS-1#TRPBF	PRODUCTION
LTC4380HMS-1#WPBF	PRODUCTION
LTC4380HMS-1#WTRPBF	PRODUCTION
LTC4380HMS-2#WPBF	PRODUCTION
LTC4380HMS-2#WTRPBF	PRODUCTION
LTC4380HMS-3#WPBF	PRODUCTION
LTC4380HMS-3#WTRPBF	PRODUCTION
LTC4380HMS-4#WPBF	PRODUCTION
LTC4380HMS-4#WTRPBF	PRODUCTION
LTC4380IMS-1#WPBF	PRODUCTION
LTC4380IMS-1#WTRPBF	PRODUCTION
LTC4380IMS-3#WPBF	PRODUCTION
LTC4380IMS-3#WTRPBF	PRODUCTION
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LTC4380CMS-1#PBF	PRODUCTION
LTC4380CMS-1#TRPBF	PRODUCTION
LTC4380CMS-2#PBF	PRODUCTION
LTC4380CMS-2#TRPBF	PRODUCTION
LTC4380CMS-3#PBF	PRODUCTION
LTC4380CMS-3#TRPBF	PRODUCTION
LTC4380CMS-4#PBF	PRODUCTION
LTC4380CMS-4#TRPBF	PRODUCTION
LTC4380HMS-1#PBF	PRODUCTION
LTC4380HMS-1#TRPBF	PRODUCTION
LTC4380HMS-1#WPBF	PRODUCTION
LTC4380HMS-1#WTRPBF	PRODUCTION
LTC4380HMS-2#PBF	PRODUCTION
LTC4380HMS-2#TRPBF	PRODUCTION
LTC4380HMS-2#WPBF	PRODUCTION
LTC4380HMS-2#WTRPBF	PRODUCTION
LTC4380HMS-3#PBF	PRODUCTION
LTC4380HMS-3#TRPBF	PRODUCTION
LTC4380HMS-3#WPBF	PRODUCTION
LTC4380HMS-3#WTRPBF	PRODUCTION
LTC4380HMS-4#PBF	PRODUCTION
LTC4380HMS-4#TRPBF	PRODUCTION
LTC4380HMS-4#WPBF	PRODUCTION
LTC4380HMS-4#WTRPBF	PRODUCTION
LTC4380IMS-1#PBF	PRODUCTION
LTC4380IMS-1#TRPBF	PRODUCTION
LTC4380IMS-1#WPBF	PRODUCTION
LTC4380IMS-1#WTRPBF	PRODUCTION
LTC4380IMS-2#PBF	PRODUCTION
LTC4380IMS-2#TRPBF	PRODUCTION
LTC4380IMS-2#WPBF	PRODUCTION
LTC4380IMS-2#WTRPBF	PRODUCTION
LTC4380IMS-3#PBF	PRODUCTION
LTC4380IMS-3#TRPBF	PRODUCTION
LTC4380IMS-3#WPBF	PRODUCTION
LTC4380IMS-3#WTRPBF	PRODUCTION
LTC4380IMS-4#PBF	PRODUCTION
LTC4380IMS-4#TRPBF	PRODUCTION
LTC4380IMS-4#WPBF	PRODUCTION
LTC4380IMS-4#WTRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4380CMS-2#PBF	PRODUCTION
LTC4380CMS-2#TRPBF	PRODUCTION
LTC4380CMS-3#PBF	PRODUCTION
LTC4380CMS-3#TRPBF	PRODUCTION
LTC4380CMS-4#PBF	PRODUCTION
LTC4380CMS-4#TRPBF	PRODUCTION
LTC4380HMS-1#PBF	PRODUCTION
LTC4380HMS-1#TRPBF	PRODUCTION
LTC4380HMS-3#PBF	PRODUCTION
LTC4380HMS-3#TRPBF	PRODUCTION
LTC4380HMS-4#PBF	PRODUCTION
LTC4380HMS-4#TRPBF	PRODUCTION
LTC4380IMS-1#PBF	PRODUCTION
LTC4380IMS-1#TRPBF	PRODUCTION
LTC4380IMS-2#PBF	PRODUCTION
LTC4380IMS-2#TRPBF	PRODUCTION
LTC4380IMS-3#PBF	PRODUCTION
LTC4380IMS-3#TRPBF	PRODUCTION
LTC4380IMS-4#PBF	PRODUCTION
LTC4380IMS-4#TRPBF	PRODUCTION
Jul 12, 2022 - 22_0157 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]
		PCN22_0157_Form Material_Report Qualification Results Summary Delta Qualification Matrix Detailed Parts List
LTC4380HMS-1#WPBF	PRODUCTION
LTC4380HMS-1#WTRPBF	PRODUCTION
LTC4380HMS-2#WPBF	PRODUCTION
LTC4380HMS-2#WTRPBF	PRODUCTION
LTC4380HMS-3#WPBF	PRODUCTION
LTC4380HMS-3#WTRPBF	PRODUCTION
LTC4380HMS-4#WPBF	PRODUCTION
LTC4380HMS-4#WTRPBF	PRODUCTION
LTC4380IMS-1#WPBF	PRODUCTION
LTC4380IMS-1#WTRPBF	PRODUCTION
LTC4380IMS-3#WPBF	PRODUCTION
LTC4380IMS-3#WTRPBF	PRODUCTION
LTC4380IMS-4#WPBF	PRODUCTION
LTC4380IMS-4#WTRPBF	PRODUCTION
Jun 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4380HMS-1#WPBF	PRODUCTION
LTC4380HMS-1#WTRPBF	PRODUCTION
LTC4380HMS-2#WPBF	PRODUCTION
LTC4380HMS-2#WTRPBF	PRODUCTION
LTC4380HMS-3#WPBF	PRODUCTION
LTC4380HMS-3#WTRPBF	PRODUCTION
LTC4380HMS-4#WPBF	PRODUCTION
LTC4380HMS-4#WTRPBF	PRODUCTION
LTC4380IMS-1#WPBF	PRODUCTION
LTC4380IMS-1#WTRPBF	PRODUCTION
LTC4380IMS-3#WPBF	PRODUCTION
LTC4380IMS-3#WTRPBF	PRODUCTION
LTC4380IMS-4#WPBF	PRODUCTION
LTC4380IMS-4#WTRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Protection Switches & Controllers 2
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection
LTC4367	RECOMMENDED FOR NEW DESIGNS	100V Overvoltage, Undervoltage and Reverse Supply Protection Controller

Parts	Product Life Cycle	Description
LT4363	RECOMMENDED FOR NEW DESIGNS	High Voltage Surge Stopper with Current Limit
LTC4364	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Ideal Diode

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC4380-1
LTC4380-2
LTC4380-3
LTC4380-4

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

LTC4380IDD-1 Demo Board | Low Quiescent Current Surge Stopper, Latchoff Version

Buy Now View Details

Product Details

Demonstration circuit 2178A showcases the LTC4380 low quiescent current surge stopper in an application which can be configured for 12V, 1A or 24V/28V, 0.5A operation. The output voltage is clamped by the LTC4380, permitting the load to operate uninterrupted during transients of up to 250V and load dump surges such as ISO-16750-2 Test A. The output current is limited to 1.25A. In the presence of a sustained input overvoltage or output overcurrent fault the LTC4380 shuts off to prevent damage to the N-channel MOSFET pass element.