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LTC4253/LTC4253A –48V Hot Swap Controllers
with Sequencer
FEATURES
n Allows Safe Board Insertion and Removal from a Live –48V Backplane
n Floating Topology Permits Very High Voltage Operation
n Adjustable Analog Current Limit with Breaker Timer Ideal for Two Battery Feeds
n Fast Response Time Limits Peak Fault Current n Adjustable Undervoltage/Overvoltage Protection
with ±1% Threshold Accuracy (LTC4253A) n Three Sequenced Power Good Outputs n Adjustable Soft-Start Current Limit n Adjustable Timer with Drain Voltage Accelerated
Response n Latchoff After Fault n Available in a 16-Pin SSOP Package
APPLICATIONS
n –48V Distributed Power Systems n Negative Power Supply Control n Central Office Switching n High Availability Servers n Disk Arrays
L, LT, LTC, LTM, Linear Technology
LTC4253 Datasheet
