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LT4363HDE-2#PBF - 

Hot Swap Controller, 4V to 80V supply, DFN-12

LINEAR TECHNOLOGY LT4363HDE-2#PBF

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
LT4363HDE-2#PBF
Order Code:
2356035
Technical Datasheet:
(EN)
See all Technical Docs

Product Information

:
DFN
:
-40°C
:
125°C
:
12Pins
:
-
:
-
:
4V
:
Each
:
80V
:
Automotive / Avionic Surge Protection, Hot Swap / Live Insertion, Battery Powered Systems
:
MSL 1 - Unlimited
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Product Overview

The LT4363HDE-2#PBF is a high voltage Surge Stopper with current limit. It protects loads from high voltage transients. It regulates the output during an overvoltage event, such as load dump in vehicles, by controlling the gate of an external N-channel MOSFET. The output is limited to a safe value allowing the loads to continue functioning. The LT4363 also monitors the voltage drop between the SNS and OUT pins to protect against overcurrent faults. An internal amplifier limits the voltage across the current sense resistor to 50mV. In either fault condition, a timer is started inversely proportional to MOSFET stress. Before the timer expires, the FLT pin pulls low to warn of an impending power down. If the condition persists, the MOSFET is turned off. It restarts after a cool down period. Two precision comparators can monitor the input supply for overvoltage (OV) and undervoltage (UV) conditions. When the potential is below the UV threshold, the external MOSFET is kept off.
  • Withstands surges over 100V with VCC clamp
  • Adjustable output clamp voltage
  • <5µs Fast overcurrent limit
  • Reverse input protection to -60V
  • Adjustable UV/OV comparator thresholds
  • Low 7µA Shutdown current
  • Adjustable fault timer
  • Controls N-channel MOSFET

Applications

Automotive, Avionics, Industrial, Power Management