MAX890L:1.2A、限流型、高边P沟道开关,带有热关断

低电阻p沟道开关,为系统和USB提供可调节的、精确的限流保护

The MAX890L smart, low-voltage, P-channel, MOSFET power switch is intended for high-side load-switching applications. This switch operates with inputs from +2.7V to +5.5V, making it ideal for both +3V and +5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal-overload protection limits power dissipation and junction temperatures. The MAX890L's maximum current limit is 1.2A. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 10µA. When the switch is off, the supply current decreases to 0.1µA. The MAX890L is available in an 8-pin SO package.

关键特性
  • +2.7V to +5.5V Input Range
  • Programmable Current Limit
  • Low Quiescent Current
    • 10µA (typ) at VIN = 3.3V
    • 0.1µA (typ) with Switch Off
  • Thermal Shutdown
  • Active-Low FAULT Indicator Output
  • 0.09Ω (typ) On-Resistance
MAX890、MAX890L:典型工作电路
MAX890、MAX890L:典型工作电路
应用
  • 接入总线插槽
  • PCMCIA槽
  • 便携式设备
数据手册DataSheet
语言下载文件备注
英文MAX890-MAX890L.pdfRev 4; 04/2011
关键参数
Part NumberPower 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
MAX890L112001200Yes15Resistor0.320.0752.75.5-40 to +85SOIC(N)/8$1.27 @1k
技术资料
质量和环境数据
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订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX890LC/D停止供货DICE SALES,;NA引脚;DICE;0°C至+70°C参考数据资料
MAX890LESA生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX890LESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX890LESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX890LESA-T停止供货MAX890LESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX890LESA/V+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX890LESA/V+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
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