MAX1812:双路、USB开关,带有故障屏蔽

The MAX1812 is a dual current-limited switch specifically made for USB applications. Each channel is guaranteed to supply 500mA and meets USB specifications. The MAX1812's low quiescent supply current (45µA) and shutdown current (3µA) conserve battery power in portable applications. The MAX1812 has multiple safety features to ensure that the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction temperature. The device also has accurate internal current-limiting circuitry to protect the input supply against both overload and short-circuit conditions. Independent fault signals (active-low FAULTA and active-low FAULTB) notify the microprocessor when a thermal-overload, current limit, undervoltage lockout, or short-circuit fault occurs. A 20ms fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot-swapping a capacitive load, thereby preventing false alarms to the host system. The MAX1812 is available in a space-saving 10-pin µMAX package. For single versions of this device, refer to the MAX1693, MAX1694, and MAX1607 data sheets.

关键特性
  • Dual USB Switch in Tiny 10-Pin µMAX Package
  • Guaranteed 500mA Load per Channel
  • Built-In 20ms Fault Blanking
  • Compliant to USB Specifications
  • +4.0V to +5.5V Input Voltage Range
  • 45µA Quiescent Current
  • 3µA Shutdown Current
  • Independent Shutdown Control
  • Independent active-low FAULT Indicator Outputs
  • Thermal-Overload Protection
MAX1812:典型工作电路
MAX1812:典型工作电路
应用
  • 计算机:台式机、工作站和服务器
  • 坞站
  • 笔记本电脑
  • PDA与掌上电脑
  • USB集线器
  • USB端口
数据手册DataSheet
语言下载文件备注
英文MAX1812.pdfRev 0; 11/2000
关键参数
Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByRON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX1812Yes2600600Yes33Preset0.07545.5-40 to +85µMAX/10$1.03 @1k
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1812EUB停止供货MAX1812EUB+µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1812EUB+生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1812EUB+T生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1812EUB-T停止供货MAX1812EUB+TµMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1812.pdf MAX1812
MAX1812.pdf MAX1812
MAX1812.pdf MAX1812
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MAX1812.pdf MAX1812