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ADI LTC4253CGN#PBF product image
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ADI LTC4253CGN#PBFRoHS

Manufacturer
ADI
MPN
LTC4253CGN#PBF
LCSC Part #
C687784
Packaging
SSOP-16-150mil
Customer #
Key Attributes
1 SSOP-16-150mil Hot Swap Controllers RoHS
Datasheetpdf iconADI LTC4253CGN#PBF
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QtyUnit Price(Reference Only)Total Amount
1+$ 5.0801$ 5.08
200+$ 1.9663$ 393.26
500+$ 1.8982$ 949.10
1,000+$ 1.8642$ 1864.20
Standard Packaging100/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Hot Swap Controllers
ManufacturerADI
PackagingSSOP-16-150mil
Operating Temperature Range0℃~+70℃
Length-
Height-
FeaturesOvercurrent Protection;Short-Circuit Protection;Soft-start;Under-voltage lockout
Threshold Voltage-
Width-
Voltage Rating-
Peak Output Current(Source)-
Number of Channels1
RDS(on)-
Peak Output Current(Sink)-
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Introduction

AI Translation

The LTC4253/LTC4253A negative voltage Hot Swap controllers allow 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 LTC4253/LTC4253A latch off after a circuit fault. Adjustable undervoltage and overvoltage detectors disconnect the load whenever the input supply exceeds the desired operating range. The LTC4253/LTC4253A’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 soft-start 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 LTC4253A features tight ±1% undervoltage/ overvoltage threshold accuracy. The LTC4253/LTC4253A are available in a 16-pin SSOP.

Features

AI Translation
  • Allows Safe Board Insertion and Removal from a Live -48V Backplane
  • Floating Topology Permits Very High Voltage Operation
  • Adjustable Analog Current Limit with Breaker Timer
  • Ideal for Two Battery Feeds
  • Fast Response Time Limits Peak Fault Current
  • Adjustable Undervoltage/Overvoltage Protection with ±1% Threshold Accuracy (LTC4253A)
  • Three Sequenced Power Good Outputs
  • Adjustable Soft-Start Current Limit
  • Adjustable Timer with Drain Voltage Accelerated Response
  • Latchoff After Fault
  • Available in a 16-Pin SSOP Package

Applications

AI Translation
  • –48V Distributed Power Systems
  • Negative Power Supply Control
  • Central Office Switching
  • High Availability Servers
  • Disk Arrays