MAX1693, MAX1693H:USB限流型开关,带有故障屏蔽

单通道USB限流开关,带有故障屏蔽,采用µMAX封装

The MAX1693/(MAX1693H)/MAX1694 are current-limited, 60mΩ switches with built-in fault blanking. Their accurate preset current limit of 0.7A to 1.0A makes them ideally suited for USB applications. Their low quiescent supply current (14µA) and shutdown current (1µA) conserve battery power in portable applications. The MAX1693/(MAX1693H)/MAX1694 operate with inputs from +2.7V to +5.5V, making them ideal for both +3V and +5V systems. A fault signal notifies the microprocessor that the internal current limit has been reached. A 10ms fault-blanking feature allows momentary faults (such as those caused when hot-swapping into a capacitive load) to be ignored, thus preventing false alarms to the host system. This fault blanking also prevents a fault signal from being issued when the device is powering up. In the MAX1693/(MAX1693H), an output overcurrent condition causes the switch to current limit at 0.7A to 1.0A and active-low FAULT to go low after the 10ms blanking period. When the overcurrent condition is removed, active-low FAULT returns to its high-impedance state. In the MAX1694, any overcurrent longer than 10ms will latch the switch open and set active-low FAULT low. The latch is cleared by cycling the active-low ON input or by powering up the device again. This feature saves power by preventing the device from thermally cycling on and off in case of a persistent short-circuit condition. The MAX1693/(MAX1693H)/MAX1694 have several safety features to ensure that the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction temperatures. Both devices have accurate internal current-limiting circuitry to protect the input supply against overload. They are available in space-saving 10-pin µMAX® packages.

关键特性
  • Accurate Current Limit (0.7A min, 1.0A max)
  • Guaranteed 0.75A Short-Circuit Protection
  • 10ms Internal Fault-Blanking Timeout
  • No Fault Signal During Power-Up
  • Latched active-low FAULT Output Turns Off Power Switch (MAX1694)
  • Thermal Shutdown Protection
  • +2.7V to +5.5V Supply Range
  • 14µA Supply Current
  • Small 10-Pin µMAX Package
MAX1693、MAX1693H、MAX1694:典型工作电路
MAX1693、MAX1693H、MAX1694:典型工作电路
应用
  • 电池充电器
  • 坞站
  • 热插拔供电
  • 笔记本电脑
  • 便携式设备
  • USB端口和集线器
数据手册DataSheet
语言下载文件备注
英文MAX1693-MAX1694.pdfRev 2; 02/2002
关键参数
Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX1693Yes17001000Yes18Preset0.70.062.75.5-40 to +85µMAX/10$0.79 @1k
MAX1693HµMAX/10
MAX1694µMAX/10
质量和环境数据
相关产品
  • MAX1607:USB限流开关,采用引脚兼容封装
  • MAX869L:2A、限流型、高边P沟道开关,带有热关断
  • MAX890L:1.2A、限流型、高边P沟道开关,带有热关断
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1693EUB停止供货MAX1693EUB+µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1693EUB+生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1693EUB+T生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1693EUB-T停止供货MAX1693EUB+TµMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1693HEUB停止供货MAX1693HEUB+µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:否
MAX1693HEUB+生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1693HEUB+T生产中µMAX,;10引脚;15.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1693HEUB-T停止供货MAX1693HEUB+TuMAX;10引脚-40°C至+85°C参考数据资料
MAX1693-MAX1694.pdf MAX1694
MAX1693.pdf MAX1693H
MAX1693-MAX1694.pdf MAX1693H