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See Technical Specifications

LT4356HMS-3#PBF

Surge Stopper with Fault Latchoff

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

LT4356HMS-3#PBF
Datasheet:

LT4356HMS-3#PBF Datasheet (PDF)
packingQty:

Tube,50
packingOption:

Tube
tempRange:

-40 to 125C
Voltage - Clamping:

27V Adj
EDA/CAD Models:

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LT4356HMS-3#PBF General Description

The LT4356-3 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 LT4356-3 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, until the SHDN pin pulls low momentarily.

Key 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
Adjustable Latchoff Fault Timer

Application

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

Specifications

model	LT4356HMS-3#PBF	packingQty	Tube,50
packingOption	Tube	lifeCycle	production
tempRange	-40 to 125C	Voltage - Clamping	27V Adj
Technology	External Switch	Number of Circuits	1
Grade	Automotive	Mounting Type	Surface Mount
Voltage - Working	4 ~ 80V	Base Product Number	LT4356