Linear Technology LT4250L
The LT4250L is designed for modules with a low enable input and the LT4250H for modules with a high enable input. The LT4250L/LT4250H are available in 8-pin PDIP and SO packages.| Part No. | LT4250L |
|---|---|
| Datasheet | LT4250L Download |
| Manufacturer |  Linear Technology |
| Description | Negative 48V Hot Swap Controller |
| Buy | Stock & Price |
FEATURES
Allows Safe Board Insertion and Removal from a Live – 48V Backplane s Circuit Breaker Immunity to Voltage Steps and Current Spikes s Programmable Inrush and Short-Circuit Current Limits s Pin Compatible with LT1640L/LT1640H s Operates from –20V to – 80V s Programmable Overvoltage Protection s Programmable Undervoltage Lockout s Power Good Control Output s Bell-Core Compatible ON/OFF Threshold s DESCRIPTIO U APPLICATIO S s s s The LT®4250L/LT4250H are 8-pin, negative 48V Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor. The pass transistor is turned off if the input voltage is less than the programmable undervoltage threshold or greater than the overvoltage threshold. A programmable current limit protects the system against shorts. After a 500µs timeout the current limit activates the electronic circuit breaker.
