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Maxim产品 - MAX4271介绍

MAX4271 - 3V至12V、限流型、热插拔控制器，带有自动重试以及DualSpeed/BiLevel故障保护

MAX4271是Maxim美信半导体公司的一款热插拔和电源开关产品，MAX4271是3V至12V、限流型、热插拔控制器，带有自动重试以及DualSpeed/BiLevel故障保护，本站介绍了MAX4271的封装应用图解、特点和优点、功能等，并给出了与MAX4271相关的Maxim元器件型号供参考。

MAX4271 - 3V至12V、限流型、热插拔控制器，带有自动重试以及DualSpeed/BiLevel故障保护 - 热插拔和电源开关 - 3V至12V热插拔控制器，提供闭锁保护或自动重试功能，8引脚SO封装 - 美信半导体

产品概述

The MAX4271/MAX4272/MAX4273 comprise a complete family of integrated 3V to 12V hot-swap controllers. They allow the safe insertion and removal of circuit cards into live backplanes.

The discharged filter capacitors of the circuit card provide a low impedance to the live backplane. High in-rush currents from the backplane to the circuit card can burn up connectors and components, or momentarily collapse the backplane power supply leading to a system reset. This family of hot-swap controllers prevents such problems by regulating the current to a preset limit when the board is plugged in, allowing the system to stabilize safely. After the startup cycle is completed, two on-chip comparators provide DualSpeed/BiLevel™ protection against short circuits, load glitches, and overcurrent conditions. In the event of a fault condition, the load is disconnected. Fault recovery is handled by unlatching (MAX4271), autoretry (MAX4272), or programmed(MAX4273) methods.

The MAX4271 family includes many integrated features that reduce component count and design time. An on-board charge pump provides the gate drive for a low-cost, external n-FET. Integrated features like startup current regulation and current glitch protection eliminate external timing resistors and capacitors. Also featured are an open-drain status output to indicate a fault condition, and an adjustable overcurrent response time.

The MAX4271 (latched fault protection) and MAX4272 (autoretry fault protection) come in 8-pin SO packages. The MAX4273 (full function) comes in the space-saving 16-pin QSOP package and 16-pin SO package. All parts are specified across the extended temperature range, and have an absolute maximum rating of 15V to provide extra protection against inductive kickback during board removal.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Provide Safe Hot Swap for +3V to +12V Power Supplies with Few External Components
  • Unique Current Regulation Architecture Minimizes n-FET Linear Mode Duration
  • Autoretry Feature (MAX4272/MAX4273)
  • DualSpeed/BiLevel Current Limit Protects Against Current Glitches and Short Circuits
  • Power-On RESET (MAX4273)
  • 15V Absolute Maximum Rating Protects Against Inductive Kickbacks During Board Removal
  • Internal Charge Pump Generates Gate Drive for External n-MOSFET
  • Status Output Pin Indicates Fault/Safe Condition
  • Space-Saving 8-Pin SO, 16-Pin QSOP Packages
    • 热门应用
  • PBX
  • RAID
  • 路由器/交换机
  • 路由器/交换机
  • 电信
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