LTC4252A

Hot SwapTM controller, 10MSOP, –0.3V to 20V, Adjustable Current Limit

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Price:: US $0.40~0.80 / piece [Get Latest Price]

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	US $0.40~0.80

PartNumber:: LTC4252A

Brand:: Linear Technology - Linear | Pack: DIP | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-01-11

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Part Number:LTC4252A
US $0.40 - 0.80
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Product Summary

The LTC4252A positive voltage Hot SwapTM 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 of LTC4252A 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 applications of the LTC4252A include Advanced Mezzanine Card, MicroTCA Systems, Workstations and Server I/O, Telecom Networks.

Parametrics

LTC4252A absolute maximum ratings: (1)Supply Voltages: 12VIN: –0.3V to 20V, AUXIN: –0.3V to 10V, VCC: –0.3V to 7V; (2)Input Voltages: 12ON, AUXON, EN: –0.3V to 7V, TIMER: –0.3V to VCC + 0.3V, 12VSENSE: –0.3V to 20V; (3)Operating Temperature Range: 0℃ to 70℃; (4)Storage Temperature Range: GN Package: –65℃ to 150℃, DHD Package: –65℃ to 125℃; (5)Lead Temperature (Soldering, 10sec): GN Package: 300℃.

Features

LTC4252A features: (1)Allows Safe Insertion into Live AMC or MicroTCA Backplane; (2)Controls 12V Main and 3.3V Auxiliary Supplies; (3)Limits Peak Fault Current in ≤1μs; (4)Adjustable Current Limit with Circuit Breaker; (5)Integrated 0.3Ω AUX Switch; (6)High Side Current Sense; (7)Gate Drive for External N-Channel MOSFET; (8)Adjustable Response Time for Overcurrent Protection; (9)Adjustable Supply Voltage Power-Up Rate; (10)Thermal Shutdown Protection; (11)LTC4223-1: Latch Off After Fault; (12)LTC4223-2: Automatic Retry After Fault; (13)16-Lead SSOP and 5mm × 4mm DFN Packages.