LTC1642

Features: ·Single Channel Positive NFET Driver·Programmable Undervoltage and Overvoltage Protection·Foldback Current Limit·Adjustable Current Limit Time-Out·Latch Off or Automatic Retry on Current Fault·Driver for SCR Crowbar on Overvoltage·Programmable Reset Timer·Reference Output with Uncommitte...

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SeekIC No. : 004401751 Detail

LTC1642: Features: ·Single Channel Positive NFET Driver·Programmable Undervoltage and Overvoltage Protection·Foldback Current Limit·Adjustable Current Limit Time-Out·Latch Off or Automatic Retry on Current F...

floor Price/Ceiling Price

Part Number:
LTC1642
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/28

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Product Details

Description



Features:

·Single Channel Positive NFET Driver
·Programmable Undervoltage and Overvoltage Protection
·Foldback Current Limit
·Adjustable Current Limit Time-Out
·Latch Off or Automatic Retry on Current Fault
·Driver for SCR Crowbar on Overvoltage
·Programmable Reset Timer
·Reference Output with Uncommitted Comparator
·VCC: 2.97V to 16.5V Normal Operation, Protected Against Surges to 33V.
·16-Pin SSOP Package



Application

· Hot Board Insertion
· Electronic Circuit Breaker



Pinout

  Connection Diagram


Specifications

Supply Voltage (VCC) ................................0.3V to 33V
SENSE Pin .................................. 0.3V to (VCC + 0.3V)
GATE Pin ...................................................0.3V to 27V
All Other Pins .........................................0.3V to 16.5V
Operating Temperature Range
LTC1642C ............................................... 0°C to 70°C
LTC1642I............................................ 40°C to 85°C
Storage Temperature Range ........... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............... 300°C



Description

The LTC®1642 is a 16-pin Hot SwapTM controller that  allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, the board supply voltage can be ramped up at a programmable rate. A high side switch driver controls the N-channel gate for supply voltages ranging from 2.97V to 16.5V.

The SENSE pin allows foldback limiting of the load current, with circuit breaker action after a programmable delay time. The delay allows the part to power-up in current limit. The CRWBR output can be used to trigger an SCR for crowbar load protection after a programmable delay if the input supply exceeds a programmable voltage. The RESET output can be used to generate a system reset with programmable delay when the supply voltage falls below a programmable voltage. The ON pin can be used to cycle the board power. The LTC1642 is available in the 16-pin SSOP package.




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