LT4356MP-1
LT4356MP-2
Info : RECOMMENDED FOR NEW DESIGNS
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LT4356MP-1
LT4356MP-2

Surge Stopper

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 7
1ku List Price Starting From $6.99
Features
  • 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
  • Adjustable Fault Timer
  • Controls N-channel MOSFET
  • Shutdown Pin Withstands –60V to 100V
  • Fault Output Indication
  • Guaranteed Operation –55°C to 125°C
  • Auxiliary Amplifier for Level Detection Comparator or Linear Regulator Controller
  • Available in 10-Pin MSOP or 16-Pin SO Packages
Additional Details
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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 LT4356MP also monitors the voltage drop between the VCC 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 cooldown 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
Part Models 7
1ku List Price Starting From $6.99

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT4356MPMS-1
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LT4356MPMS-1#PBF
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LT4356MPMS-1#TRPBF
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LT4356MPS-1#PBF
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LT4356MPS-1#TRPBF
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LT4356MPS-2#PBF
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LT4356MPS-2#TRPBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LT4356MPMS-1

LT4356MPMS-1#PBF

PRODUCTION

LT4356MPMS-1#TRPBF

PRODUCTION

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Aug 6, 2022

- 22_0173

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LT4356MPS-1#PBF

PRODUCTION

LT4356MPS-1#TRPBF

PRODUCTION

LT4356MPS-2#PBF

PRODUCTION

LT4356MPS-2#TRPBF

PRODUCTION

Aug 16, 2021

- 20_0040

Discontinuation of Lead Finished Parts for MSOP Package.

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down
Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LT4356MPMS-1

LT4356MPMS-1#PBF

PRODUCTION

LT4356MPMS-1#TRPBF

PRODUCTION

Jun 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

Aug 6, 2022

- 22_0173

arrow down

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LT4356MPS-1#PBF

PRODUCTION

LT4356MPS-1#TRPBF

PRODUCTION

LT4356MPS-2#PBF

PRODUCTION

LT4356MPS-2#TRPBF

PRODUCTION

Aug 16, 2021

- 20_0040

arrow down

Discontinuation of Lead Finished Parts for MSOP Package.

Tools & Simulations

Tools & Simulations 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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