Features and Benefits

  • Allows Safe Insertion into Live AMC or MicroTCA Backplane
  • Controls 12V Main and 3.3V Auxiliary Supplies
  • Limits Peak Fault Current in ≤1µs
  • Adjustable Current Limit with Circuit Breaker
  • Integrated 0.3Ω AUX Switch
  • High Side Current Sense
  • Gate Drive for External N-Channel MOSFET
  • Adjustable Response Time for Overcurrent Protection
  • Adjustable Supply Voltage Power-Up Rate
  • Thermal Shutdown Protection
  • LTC4223-1: Latch Off After Fault
  • LTC4223-2: Automatic Retry After Fault
  • 16-Lead SSOP and 5mm × 4mm DFN Packages

Product Details

The LTC4223 positive voltage Hot Swap controller allows a board to be safely inserted and removed from a live AMC or MicroTCA backplane. It controls the main 12V supply with an external N-channel MOSFET and the 3.3V auxiliary supply with an integrated switch. The 12V output ramp rate is adjustable and includes inrush current limiting. The 12V output is also protected against short circuit faults with a fast acting current limit and a 5% accurate timed circuit breaker. The 3.3V output includes both soft start and overcurrent protection.

The LTC4223 features a current monitor output for the 12V supply, and reports fault and power-good status for both supplies. It also detects card presence and allows independent control of the 12V and auxiliary 3.3V supply outputs. The LTC4223-1 features a latch-off circuit breaker, while the LTC4223-2 provides automatic retry after a fault.


  • Advanced Mezzanine Card, MicroTCA Systems
  • Workstations and Server I/O
  • Telecom Networks

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Evaluation Boards Pricing displayed is based on 1-piece.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.