LT4256-1IS8#PBF
ActiveHOT-SWAP CONTROLLER, 10.8 V TO 80 V IN, SOIC-8, -40°C TO 85°C
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LT4256-1IS8#PBF
ActiveHOT-SWAP CONTROLLER, 10.8 V TO 80 V IN, SOIC-8, -40°C TO 85°C
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT4256-1IS8#PBF |
|---|---|
| Applications | General Purpose |
| Current - Supply | 1.8 mA |
| Features | Latched Fault |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Channels [custom] | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 C |
| Package / Case | 0.154 in |
| Package / Case | 8-SOIC |
| Package / Case | 3.9 mm |
| Programmable Features | Fault Timeout, Slew Rate, UVLO, Current Limit |
| Supplier Device Package | 8-SO |
| Type | Hot Swap Controller |
| Voltage - Supply [Max] | 80 V |
| Voltage - Supply [Min] | 10.8 VDC |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
LT4256-1LT4256-2 Series
The LT4256-1/LT4256-2 are high voltage Hot Swap™controllers that allow 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 10.8V to 80V.The LT4256-1/LT4256-2 features an adjustable analog foldback 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 LT4256-1 latches off until the UV pin is cycled low.The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCCprovides programmable undervoltage protection.The LT4256 can be used as an upgrade to LT1641 designs.The LT4256-1 and LT4256-2 are available in an 8-pin SO package that is pin compatible with the LT1641.Retry / Latch OffFeaturesPackageLT4256-1Latch OffUVSO-8LT4256-2RetryUVSO-8LT4256-3Latch Off or RetryUV/OV, Open Circuit DetectSSOP-16ApplicationsHot Board InsertionElectronic Circuit Breaker/Power BussingIndustrial High Side Switch/Circuit Breaker24V/48V Industrial/Alarm SystemsIdeally Suited for 12V, 24V and 48V Distributed Power Systems48V Telecom Systems
Documents
Technical documentation and resources
