Overview
The LT4250L and LT4250H are negative 48V Hot Swap controllers from Linear Technology. These devices enable boards to be safely inserted and removed from a live backplane. They offer programmable inrush and short-circuit current limits, undervoltage and overvoltage protection, and a power good output signal.
Key Features
- Allows safe board insertion and removal from a live -48V backplane.
- Circuit breaker immunity to voltage steps and current spikes.
- Programmable inrush and short-circuit current limits.
- Operates from -18V to -80V.
- Programmable overvoltage and undervoltage lockout.
- Power Good control output.
Applications
- Central Office Switching
- -48V Distributed Power Systems
- Negative Power Supply Control
Technical Specifications
The LT4250L/LT4250H controllers are available in 8-pin PDIP and SO packages. They are designed to manage inrush current by controlling the gate voltage of an external N-channel pass transistor. The device provides protection against overvoltage, undervoltage, and overcurrent conditions.
For detailed electrical characteristics, pin functions, and typical application circuits, please refer to the full datasheet.
Resources
- For more information on lead-free part marking, visit: www.linear.com/leadfree/
- For tape and reel specifications, visit: www.linear.com/tapeandreel/
Mixed-signal and digital signal processing ICs | Analog Devices
