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+72V、SOT23/TDFN封装、Simple Swapper热插拔控制器

产品详情

主要特征

Parametric specs for Hot Swap Controllers
VIN (V) (min) 9
VIN (V) (max) 72
# Channels 1
Circuit Breaker/ Current Limit Circuit Breaker
Circuit Breaker/Current Limit Threshold (mV) 300 to 500
Fault Condition Control Latched Off
Periodic Retry
Programmable
Positive/Negative Rail Positive
Features Requires No RSENSE
Package/Pins SOT23/6
TDFN/6
Budgetary
Price (See Notes)
2.49
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参量

Parametric specs for Hot Swap Controllers
VIN (V) (min) 9
VIN (V) (max) 72
# Channels 1
Circuit Breaker/ Current Limit Circuit Breaker
Circuit Breaker/Current Limit Threshold (mV) 300 to 500
Fault Condition Control Latched Off
Periodic Retry
Programmable
Positive/Negative Rail Positive
Features Requires No RSENSE
Package/Pins SOT23/6
TDFN/6
Budgetary
Price (See Notes)
2.49

主要特征

  • Wide +9V to +72V Operation
  • Requires No External Sense Resistor
  • Drives External p-Channel MOSFET
  • Limits Inrush Current
  • Circuit-Breaker Function
  • Less than 2mA Quiescent Current
  • ON/Active-Low OFF Input Permits Load Power-Supply Control and Sequencing
  • Adjustable Undervoltage Lockout
  • Power-Good Output with +72V Rating
  • Latching or Automatic Retry Fault Management
  • Thermal Shutdown Helps Protect the External MOSFET
  • Available in Two Small Packages
    • 6-Pin TDFN and SOT23

应用/用途

  • 基站线卡
  • 工业系统
  • 网络集线器、交换机和路由器
  • 网络集线器、交换机和路由器
  • RAID
  • 服务器

描述

The MAX5902/MAX5903 are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane without causing a glitch on the power-supply rail. These devices operate from +9V to +72V and provide the simplest hot-swap solution by eliminating all external components except the external p-channel MOSFET.

The MAX5902/MAX5903 limit the inrush current to the load and provide a circuit-breaker function for overcurrent protection. During startup the circuit-breaker function is disabled and the MAX5902/MAX5903 limit the inrush current by gradually turning on the external MOSFET. Once the external MOSFET is fully enhanced, the circuit-breaker function is enabled and the MAX5902/MAX5903 provide overcurrent protection by monitoring the voltage drop across the external MOSFET's on-resistance.

The MAX5902/MAX5903 include an undervoltage lockout (UVLO) function, ON/active-low OFF control input, and a power-good status output, active-low PGOOD (MAX5902) or PGOOD (MAX5903). A built-in thermal shutdown feature is also included to protect the external MOSFET in case of overheating.

The MAX5902/MAX5903 offer latched or autoretry fault management and are available with 300mV, 400mV or 500mV circuit-breaker thresholds. Both the MAX5902 and MAX5903 are available in small SOT23 and TDFN packages, and are specified for the extended -40°C to +85°C temperature range. For specific ordering information, see the Selector Guide at the end of the data sheet.

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MAX5902、MAX5903:典型工作电路 MAX5902、MAX5903:典型工作电路 Zoom icon

Technical Docs

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在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心