| Part No.： | LT4256-1 |
| Page： | 16 Pages |
| Size： | 169 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 1 |
| Update Time： | 2023-12-06 15:52:25 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LT4256-1CS8#PBF | Tube | 100 | 42561 | 1 | 8 | 0°C ~ 70°C | 8-Lead SOIC | |
| LT4256-1CS8#TRPBF | Reel | 2500 | 42561 | 1 | 8 | 0°C ~ 70°C | 8-Lead SOIC | |
| LT4256-1CS8#TRMPBF | Reel | 500 | 42561 | 1 | 8 | 0°C ~ 70°C | 8-Lead SOIC | |
| LT4256-1IS8#PBF | Tube | 100 | 42561I | 1 | 8 | -40°C ~ 85°C | 8-Lead SOIC | |
| LT4256-1IS8#TRPBF | Reel | 2500 | 42561I | 1 | 8 | -40°C ~ 85°C | 8-Lead SOIC | |
| LT4256-1IS8#TRMPBF | Reel | 500 | 42561I | 1 | 8 | -40°C ~ 85°C | 8-Lead SOIC |
The LT4256-1 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 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 VCC provides programmable undervoltage protection.
The LT4256 can be used as an upgrade to LT1641 designs.
The LT4256-1 are available in an 8-pin SO package that is pin compatible with the LT1641.
