LTC1646

Features: · Allows Safe Board Insertion and Removal from a Live, CompactPCITM Bus· Controls 3.3V and/or 5V Supplies· Programmable Foldback Current Limit During Power-Up· Dual Level Circuit Breakers Protect Supplies from Overcurrent and Short-Circuit Faults· LOCAL_PCI_RST# Logic On-Chip· PRECHARGE ...

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LTC1646 Picture
SeekIC No. : 004401766 Detail

LTC1646: Features: · Allows Safe Board Insertion and Removal from a Live, CompactPCITM Bus· Controls 3.3V and/or 5V Supplies· Programmable Foldback Current Limit During Power-Up· Dual Level Circuit Breakers ...

floor Price/Ceiling Price

Part Number:
LTC1646
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: 2024/3/27

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Product Details

Description



Features:

· Allows Safe Board Insertion and Removal from a Live, CompactPCITM Bus
· Controls 3.3V and/or 5V Supplies
· Programmable Foldback Current Limit During Power-Up
· Dual Level Circuit Breakers Protect Supplies from Overcurrent and Short-Circuit Faults
· LOCAL_PCI_RST# Logic On-Chip
· PRECHARGE Output Biases I/O Pins During Card Insertion and Extraction
· User Programmable Supply Voltage Power-Up Rate
· 15V High Side Drive for External N-Channel MOSFETS
· PWRGDRESETOUT and FAULT Outputs



Application

CompactPCI Bus Removable Boards


Pinout

  Connection Diagram


Specifications

Supply Voltages: 5VIN, 3VIN ..................................... 10V
Input Voltages: (Pins 15, 16) ...... 0.3V to (5VIN + 0.3V)
Output Voltages: (Pins 1, 3, 4) ... 0.3V to (5VIN + 0.3V)
Analog Voltages and Currents:
    (Pins 9, 11) .......................................... 0.3V to 5VIN
    (Pins 2, 5, 7, 13, 14) .............. 0.3V to (5VIN + 0.3V)
    (Pin 10) .......................................................... ±20mA
Operating Temperature Range:
    LTC1646C ............................................. 0°C to 70°C
    LTC1646I...........................................40°C to 85°C
Storage Temperature Range ...............65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C



Description

The LTC®1646 is a Hot SwapTM controller that allows a board to be safely inserted and removed from a live CompactPCI bus slot. Two external N-Channel transistors control the 3.3V and 5V supplies. The supplies can be ramped-up in current limit or a programmable rate. Electronic circuit breakers protect both supplies against overcurrent fault conditions. The PWRGD output indicates when all of the supply voltages are within tolerance. The OFF/ON pin is used to cycle the board power or reset the circuit breaker. The PRECHARGE output can be used to bias the bus I/O pins during card insertion and extraction.PCI_RST# is logically combined on-chip with HEALTHY# in order to generate LOCAL_PCI_RST# which can be used to reset the CPCI card logic if either of the supply voltages is not within tolerance.

The LTC1646 is available in the 16-pin narrow SSOP package.




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