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LINEAR TECHNOLOGY  LT4256-2IS8#PBF  Hot Swap Controller, 10.8V to 80V supply, SOIC-8

LINEAR TECHNOLOGY LT4256-2IS8#PBF
Manufacturer Part No:
LT4256-2IS8#PBF
Order Code:
2295309
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LT4256-2IS8#PBF is a positive high voltage Hot Swap Controller that allows a board to be safely inserted and removed from a live backplane. An internal driver drives an external N-channel MOSFET switch to control supply voltages ranging from 10.8 to 80V. It features an adjustable analog fold back current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off and the PWRGD output asserts low. The LT4256-2 automatically restarts after a time-out delay. The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCC provides programmable undervoltage protection.
  • Allows safe board insertion and removal from a live backplane
  • Foldback current limiting
  • Overcurrent fault detection
  • Drives an external N-channel MOSFET
  • Programmable supply voltage power-up rate
  • Undervoltage protection latch off operation mode
  • Automatic retry

Product Information

Controller Applications:
48V Telecom Systems, Electronic Circuit Breaker / Power Bussing, Hot Board Insertion
Input Voltage:
48V
Supply Voltage Min:
10.8V
Supply Voltage Max:
80V
Controller IC Case Style:
SOIC
No. of Pins:
8Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Industrial
  • Power Management
  • Communications & Networking
  • Security

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000299

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