حفاظت مدار محدودکننده‌های ولتاژ گذرا (تی وی اس) تجهیزات حفاظت در برابر اضافه‌ولتاژ گذرا (اس پی دی)

Product Attributes

Introduction

The LMX5069 high-side N_FET driver works with an external MOSFET to function as a hot-swap controller with power limiting capability. The device is designed to control inrush current to the load when a board is inserted into a live backplane or other hot power source, thereby limiting the voltage droop on the backplane supply voltage and the dV/dt of the voltage applied to the load. The current limit of the external series N-channel MOSFET is programmable. Input undervoltage and overvoltage lockout levels are programmable via a resistor divider network. The LMX5069 automatically restarts at a fixed duty cycle programmed by a timer capacitor. The LMX5069 is available in 10-pin DFN3×3 and MSOP packages.

Features

• Wide operating voltage range: 9V to 90V
• Adjustable current limit
• Circuit breaker function for severe overcurrent events
• Internal high-side charge pump and gate driver for external N-channel MOSFET
• Adjustable undervoltage lockout
• Adjustable overvoltage lockout
• Active-low open-drain POWER GOOD output
• Auto-restart capability
• 10-pin DFN3×3-10L and MSOP10 packages

Applications

• Server backplane systems
• Base station power distribution systems
• 24V and 48V industrial systems
• Programmable logic circuits
• Solid-state circuit breakers