LT4356-1
LT4356-2

RECOMMENDED FOR NEW DESIGNS

Surge Stopper

Data Sheet (Rev. D) Product Selection Table

Part Models: 30
1ku List Price: Starting From $2.40

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Part Details

Stops High Voltage Surges
Adjustable Output Clamp Voltage
Overcurrent Protection
Wide Operation Range: 4V to 80V
Reverse Input Protection to –60V
Low 7µA Shutdown Current (LT4356-1)
Auxiliary Amplifier for Level Detection Comparator or Linear Regulator Controller (LT4356-2)

Adjustable Fault Timer
Controls N-channel MOSFET
Shutdown Pin Withstands –60V to 100V
Fault Output Indication
Guaranteed Operation to 125°C
Available in (4mm × 3mm) 12-Pin DFN, 10-Pin MSOP or 16-Pin SO Packages

The LT4356 surge stopper protects loads from high voltage transients. It regulates the output during an overvoltage event, such as load dump in automobiles, by controlling the gate of an external N-channel MOSFET. The output is limited to a safe value thereby allowing the loads to continue functioning. The LT4356 also monitors the voltage drop between the V_CC and SNS pins to protect against overcurrent faults. An internal amplifier limits the current sense voltage to 50mV. In either fault condition, a timer is started inversely proportional to MOSFET stress. If the timer expires, the FLT pin pulls low to warn of an impending power down. If the condition persists, the MOSFET is turned off. After a cool down period, the GATE pin pulls up turning on the MOSFET again.

The auxiliary amplifier may be used as a voltage detection comparator or as a linear regulator controller driving an external PNP pass transistor.

Back-to-back FETs can be used in lieu of a Schottky diode for reverse input protection, reducing voltage drop and power loss. A shutdown pin reduces the quiescent current to less than 7µA for the LT4356-1 during shutdown. The LT4356-2 differs from the LT4356-1 during shutdown by reducing the quiescent current to 60µA and keeping alive the auxiliary amplifier for uses such as an undervoltage lockout or always-on regulator.


	LT4356-1 LT4356MP-1	LT4356-2 LT4356MP-2	LT4356-3 LT4356MP-3
Low Current Shutdown	7uA	60uA	7uA
Aux Amp In Shutdown	OFF	Always Alive	OFF
Fault Retry	Retry	Retry	Latch Off
Packages	DFN-12, MS-10, SO-16	DFN-12, SO-16	DFN-12, MS-10, SO-16
Temp Grades	C, I, H, MP	C, I, H, MP	C, I, H, MP

Applications

Automotive/Avionic Surge Protection
Hot Swap/Live Insertion
High Side Switch for Battery Powered Systems
Intrinsic Safety Applications

Part Models: 30
1ku List Price: Starting From $2.40

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
LT4356CDE-1#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CDE-1#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CDE-2#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CDE-2#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CS-1#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CS-1#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CS-2#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356CS-2#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HDE-1#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HDE-1#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HDE-2#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HDE-2#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HS-1#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HS-1#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HS-2#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356HS-2#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IDE-1#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IDE-1#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IDE-2#PBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IDE-2#TRPBF	12-Lead DFN (4mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IMS-1#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IMS-1#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IS-1#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IS-1#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IS-2#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT4356IS-2#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Nov 13, 2024 - 24_0192 LT4356-1/LT4356-2 Data Sheet Revision
		PCN24_0192_Form Material_Report Datasheet Specification Comparison
LT4356CDE-1#PBF	PRODUCTION
LT4356CDE-1#TRPBF	PRODUCTION
LT4356CDE-2#PBF	PRODUCTION
LT4356CDE-2#TRPBF	PRODUCTION
LT4356CMS-1#PBF	PRODUCTION
LT4356CMS-1#TRPBF	PRODUCTION
LT4356CS-1#PBF	PRODUCTION
LT4356CS-1#TRPBF	PRODUCTION
LT4356CS-2#PBF	PRODUCTION
LT4356CS-2#TRPBF	PRODUCTION
LT4356HDE-1#PBF	PRODUCTION
LT4356HDE-1#TRPBF	PRODUCTION
LT4356HDE-2#PBF	PRODUCTION
LT4356HDE-2#TRPBF	PRODUCTION
LT4356HMS-1#PBF	PRODUCTION
LT4356HMS-1#TRPBF	PRODUCTION
LT4356HS-1#PBF	PRODUCTION
LT4356HS-1#TRPBF	PRODUCTION
LT4356HS-2#PBF	PRODUCTION
LT4356HS-2#TRPBF	PRODUCTION
LT4356IDE-1#PBF	PRODUCTION
LT4356IDE-1#TRPBF	PRODUCTION
LT4356IDE-2#PBF	PRODUCTION
LT4356IDE-2#TRPBF	PRODUCTION
LT4356IMS-1#PBF	PRODUCTION
LT4356IMS-1#TRPBF	PRODUCTION
LT4356IS-1#PBF	PRODUCTION
LT4356IS-1#TRPBF	PRODUCTION
LT4356IS-2#PBF	PRODUCTION
LT4356IS-2#TRPBF	PRODUCTION
Nov 15, 2019 - 19_0275 LT4356-2 Notification of Die Revision Change
		PCN19_0275_Form Material_Report Qualification Results Summary
LT4356CDE-2#PBF	PRODUCTION
LT4356CDE-2#TRPBF	PRODUCTION
LT4356CS-2#PBF	PRODUCTION
LT4356CS-2#TRPBF	PRODUCTION
LT4356HDE-2#PBF	PRODUCTION
LT4356HDE-2#TRPBF	PRODUCTION
LT4356HS-2#PBF	PRODUCTION
LT4356HS-2#TRPBF	PRODUCTION
LT4356IDE-2#PBF	PRODUCTION
LT4356IDE-2#TRPBF	PRODUCTION
LT4356IS-2#PBF	PRODUCTION
LT4356IS-2#TRPBF	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
LT4356CMS-1#PBF	PRODUCTION
LT4356CMS-1#TRPBF	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
LT4356CMS-1#PBF	PRODUCTION
LT4356CMS-1#TRPBF	PRODUCTION
LT4356HMS-1#PBF	PRODUCTION
LT4356HMS-1#TRPBF	PRODUCTION
LT4356IMS-1#PBF	PRODUCTION
LT4356IMS-1#TRPBF	PRODUCTION
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0246_Form Material_Report Marking Comparison Delta Qualification Matrix
LT4356CS-1#PBF	PRODUCTION
LT4356CS-1#TRPBF	PRODUCTION
LT4356CS-2#PBF	PRODUCTION
LT4356CS-2#TRPBF	PRODUCTION
LT4356HS-1#PBF	PRODUCTION
LT4356HS-1#TRPBF	PRODUCTION
LT4356HS-2#PBF	PRODUCTION
LT4356HS-2#TRPBF	PRODUCTION
LT4356IS-1#PBF	PRODUCTION
LT4356IS-1#TRPBF	PRODUCTION
LT4356IS-2#PBF	PRODUCTION
LT4356IS-2#TRPBF	PRODUCTION
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]
		PCN22_0173_Form Material_Report Delta Qualification Matrix
LT4356CS-1#PBF	PRODUCTION
LT4356CS-1#TRPBF	PRODUCTION
LT4356CS-2#PBF	PRODUCTION
LT4356CS-2#TRPBF	PRODUCTION
LT4356HS-1#PBF	PRODUCTION
LT4356HS-1#TRPBF	PRODUCTION
LT4356HS-2#PBF	PRODUCTION
LT4356HS-2#TRPBF	PRODUCTION
LT4356IS-1#PBF	PRODUCTION
LT4356IS-1#TRPBF	PRODUCTION
LT4356IS-2#PBF	PRODUCTION
LT4356IS-2#TRPBF	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
LT4356HMS-1#PBF	PRODUCTION
LT4356HMS-1#TRPBF	PRODUCTION
LT4356IMS-1#PBF	PRODUCTION
LT4356IMS-1#TRPBF	PRODUCTION
Apr 18, 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
LT4356HMS-1#PBF	PRODUCTION
LT4356HMS-1#TRPBF	PRODUCTION
LT4356IMS-1#PBF	PRODUCTION
LT4356IMS-1#TRPBF	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
PowerPath, Ideal Diodes, and Load Switches 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Parts	Product Life Cycle	Description
LT4356-3 LT4356MP-3	RECOMMENDED FOR NEW DESIGNS	Surge Stopper with Fault Latchoff
LT4356MP-1 LT4356MP-2	RECOMMENDED FOR NEW DESIGNS	Surge Stopper

Tools & Simulations

LTspice 4

Models for the following parts are available in LTspice:

LT4356-1
LT4356-2
LT4356-3

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

LT4356-1 Demo | Overvoltage Protection Regulator with Auto-retry

Buy Now View Details

Product Details

DC1018B-A: Demo Board for the LT4356-1 and -2 Surge Stopper.

Resources

DC1018B - Schematic
11/13/2009

DC1018B - Design File
11/13/2009

DC1018B-A - Demo Manual
11/13/2009

LT4356-2 Demo Board | Overvoltage Protection Regulator with Auto-retry, Auxiliary Amplifier remains on during Shutdown

Buy Now View Details

Features and Benefits

For Automotive Applications up to 3A
Triple Layout for D-Pak, D2-Pak or S-8 MOSFETs
0.093-inch Turret Holes Accommodate 12 AWG Wire
LEDs Show Input, Outputs, Fault and Enable
Easily Modified for up to 20A

Product Details

Demonstration Circuit DC1018B-B showcases the LT4356-2 Surge Stopper in a 12V, 3A application. Input transients of up to 60V are limited to 16V at the output; sustained overvoltage conditions cause the limiter to trip off and retry after the overvoltage is removed.

LEDs indicate the presence of +12V input and output, as well as state of the fault output, FLT# and enable output, EN.

Input and output connections are made by 93 mil turrets which if removed, accommodate insertion of up to 12 gauge wires for in-situ testing.

Design files for this circuit board are available below.

Applications

Servers, Routers, Switches
Mass Storage
Fan Trays
Automotive Modules

Resources

DC1018B - Schematic
11/13/2009

DC1018B - Design File
11/13/2009

DC1018B-B - Demo Manual
11/13/2009

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LT4356-1
LT4356-2

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Application Note 1

Technical Articles 5

Video 1

Product Selector Card 2

Software Resources

Can't find the software or driver you need?

Hardware Ecosystem

Tools & Simulations

LTspice 4

Models for the following parts are available in LTspice:

Evaluation Kits

Product Details

Resources

Features and Benefits

Product Details

Resources

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