LT4250LCS8#PBF

LT®4250L is an 8-pin, negative 48V Hot Swap™ controller that allows 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. Application includes central office switching, –48V distributed power systems, negative power supply control.

• Circuit breaker immunity to voltage steps and current spikes
• Programmable inrush and short-circuit current limits
• Programmable overvoltage protection
• Programmable undervoltage lockout
• Power good control output
• Bell-core compatible ON/OFF threshold
• Supply voltage operating range from 18 to 80V (TA = 25°C)
• 8-lead plastic SO package
• Temperature rating range from 0°C to 70°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party