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MAX890, MAX890L
1.2A、限流型、高端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


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概述
完整的数据资料 (PDF, 744kB)
英文 Download this datasheet in PDF format下载

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   应用/使用
  • +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

 
  • 接入总线插槽
  • PCMCIA槽
  • 便携式设备

    Key Specifications:   USB Power Switches
    Part Number Number of Switches Max. Load Current (A) RON (typ) (Ω) Fault Indicator Switch Op. Voltage Range (V) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX890L  1 1 0.075 Yes 2.7 to 5.5 Yes DICE SALES/0
    SOIC/8
    31 -40 to +85 $1.25 @ 1k
    See All USB Power Switches (28)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    图表
    MAX890,MAX890L:典型工作电路
    典型工作电路

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    参考文献: 19-1146; Rev. 3; 2000-03-01
    本页最后一次更新: 2007-07-19




             


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