MAX4370

电流调节热插拔控制器,带有DualSpeed/BiLevel故障保护


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说明

The MAX4370 is a circuit-breaker IC designed to offer protection in hot-swap applications using Maxim's DualSpeed/BiLevel™ detection. This controller, designed to reside either on the backplane or on the removable card, is used to protect a system from start-up damage when a card or board is inserted into a rack with the main system power supply turned on. The card's discharged filter capacitors provide a low impedance that can momentarily cause the main power supply to collapse. The MAX4370 prevents this start-up condition by providing inrush current regulation during a programmable start-up period, allowing the system to stabilize safely. In addition, two on-chip comparators provide DualSpeed/BiLevel short-circuit protection and overcurrent protection during normal operation.

The MAX4370 provides protection for a +3V to +12V single supply. An internal charge pump generates the controlled gate drive for an external N-channel MOSFET power switch. The MAX4370 latches the switch off after a fault condition until an external reset signal clears the device. Other features include a status pin to indicate a fault condition, an adjustable overcurrent response time, and a power-on reset comparator.

The MAX4370 is specified for the extended-industrial temperature range (-40°C to +85°C) and is available in an 8-pin SO package.
MAX4370:典型工作电路 MAX4370:典型工作电路 放大+

关键特性

  • DualSpeed/BiLevel Protection During Normal Operation
  • Inrush Current Regulated at Start-Up
  • Resides Either on the Backplane or on the Removable Card
  • Programmable Start-Up Period and Response Time
  • Allows Safe Board Insertion and Removal from Live Backplane
  • Protection for +3V to +12V Single Supplies
  • Latched Off After Fault Condition
  • Status Output Pin
  • Internal Charge Pump Generates Gate Drive for External N-Channel MOSFET

应用

  • 热插拔板
  • 固态电路断路器

请查看具体的参数规格 Hot Swap Controllers (57)


Part NumberVIN
(V)
VIN
(V)
Circuit Breaker/ Current LimitCircuit Breaker/Current Limit Threshold
(mV)
Fault Condition ControlChannelsPositive/Negative RailFeaturesPackage/PinsBudgetary
Price
minmaxSee Notes
MAX4370 2.713.2Current Limit50Latched Off1PositiveDualSpeed/BiLevel Current Limit
SOIC (N)/8
$3.41 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

技术资料

参考原理图 2765 Flexible Fault Protection
参考原理图 2378 灵活的系统故障保护电路设计
设计指南 2158 Advantages of IC-Based Hot-Swap Circuit Protection
产品可靠性报告: MAX4370.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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类型 编号 标题
参考原理图 2765 Flexible Fault Protection
参考原理图 2378 灵活的系统故障保护电路设计
设计指南 2158 Advantages of IC-Based Hot-Swap Circuit Protection
类型 编号 标题
参考电路2765Flexible Fault Protection
参考电路2378灵活的系统故障保护电路设计