LTC1644

PRODUCTION

CompactPCI Bus Hot Swap Controller

Data Sheet Product Selection Table
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Overview

  • Allows Safe Board Insertion and Removal from a Live, CompactPCI™ Bus
  • Controls –12V, 3.3V, 5V and 12V Supplies
  • Adjustable Foldback Current Limit with Circuit Breaker
  • Dual-Level Circuit Breakers Protect 5V and 3.3V Supplies from Overcurrent and Short-Circuit Faults
  • LOCAL_PCI_RST# Logic On-Chip
  • PRECHARGE Output Biases I/O Pins During Card Insertion and Extraction
  • Adjustable Supply Voltage Power-Up Rate

The LTC1644 is a Hot Swap™ controller that allows a board to be safely inserted and removed from a CompactPCI bus slot. External N-channel transistors control the 3.3V/5V supplies, while on-chip switches control the –12V and 12V supplies. The 3.3V and 5V supplies can be ramped up at a programmable rate. Electronic circuit breakers protect all four supplies against overcurrent faults. 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 combined on-chip with HEALTHY# in order to generate LOCAL_PCI_RST#.

Applications

  • Hot Board Insertion into CompactPCI Bus
LTC1644
CompactPCI Bus Hot Swap Controller
Figure 1 Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 1

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 1
LTC4244
PRODUCTION Rugged, CompactPCI Bus Hot Swap Controllers
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC1644
LTspice

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.

Evaluation Kits
DC461A
OBSOLETE: LTC1644 Demo Board
DC461A - Schematic

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