Product Summary

The LTC4252A-1IMS#TR negative voltage Hot SwapTM 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 applications of the LTC4252A-1IMS#TR are (1)Hot Board Insertion; (2)Electronic Circuit Breaker; (3)–48V Distributed Power Systems; (4)Negative Power Supply Control; (5)Central Office Switching; (6)High Availability Servers; (7)ATCA.

Parametrics

LTC4252A-1IMS#TR absolute maximum ratings: (1)Current into VIN (100μs Pulse): 100mA; (2)VIN, DRAIN Pin Minimum Voltage : –0.3V; (3)Input/Output Pins (Except SENSE and DRAIN)Voltage : –0.3V to 16V; (4)SENSE Pin Voltage : –0.6V to 16V; (5)Current Out of SENSE Pin (20μs Pulse): –200mA; (6)Current into DRAIN Pin (100μs Pulse): 20mA; (7)Maximum Junction Temperature : 125°C; (8)Operating Temperature Range: 0°C to 70°C; (9)Storage Temperature Range : –65°C to 150°C; (10)Lead Temperature (Soldering, 10 sec): 300°C.

Features

LTC4252A-1IMS#TR features: (1)Allows Safe Board Insertion and Removal from a Live – 48V Backplane; (2)Floating Topology Permits Very High Voltage Operation; (3)Programmable Analog Current Limit With Circuit Breaker Timer; (4)Fast Response Time Limits Peak Fault Current; (5)Programmable Soft-Start Current Limit; (6)Programmable Timer with Drain Voltage Accelerated Response; (7)±1% Undervoltage/Overvoltage Threshold Accuracy (LTC4252A); (8)Adjustable Undervoltage/Overvoltage Protection; (9)LTC4252-1/LTC4252A-1: Latch Off After Fault; (10)LTC4252-2: Automatic Retry After Fault; (11)Available in 8-Pin and 10-Pin MSOP Packages.

Diagrams

LTC4252A-1IMS#TR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC4252A-1IMS#TR
LTC4252A-1IMS#TR


IC CTRLR HOTSWAP NEG VOLT 10MSOP

Data Sheet

0-2500: $2.04
LTC4252A-1IMS#TRPBF
LTC4252A-1IMS#TRPBF


IC CNTRLR HOTSWAP NEGVOLT 10MSOP

Data Sheet

0-2500: $2.04