- Manufacturer Part Number : LTC4253B
- Manufacturer : AD
- Description : –48V Hot Swap Controller with Sequencer
- Series : LTC4253B
- Reference Price : USD 2.36
- Our Price : We have a better price, contact us by email
- Product Type : Hot Swap Controllers
- Function : High Voltage Hot Swap Controllers
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC4253B
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The LTC4253B negative voltage Hot Swap™ controller allows a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current-limiting: a timed circuit breaker, active current limiting and a fast feedforward path that limits peak current under worst-case catastrophic fault conditions. The LTC4253B latches off after a circuit fault.
Adjustable undervoltage and overvoltage detectors disconnect the load whenever the input supply exceeds the desired operating range. The LTC4253B’s supply input is shunt-regulated, allowing safe operation with very high supply voltages. A multifunction timer delays initial start-up and controls the circuit breaker’s response time. The circuit breaker’s response time can be accelerated by sensing excessive MOSFET drain voltage, keeping the MOSFET within its safe operating area (SOA). An adjustable softstart circuit controls MOSFET inrush current at start-up.
Three power good outputs are sequenced by an adjustable timer and two ENABLE inputs to enable external power modules at start-up or disable them if the circuit breaker trips. The LTC4253B improves the ruggedness of the LTC4253 shunt regulator.
Notes | |
LTC4253 | |
LTC4253A | Recommend LTC4253B for new designs |
LTC4253A-ADJ | Recommend LTC4253B for new designs |
LTC4253B |
Applications
- –48V Distributed Power Systems
- Negative Power Supply Control
- Central Office Switching
- High Availability Servers
- Disk Arrays
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.