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1.2A、限流型、高边P沟道开关,带有热关断

1.2A限流、高边p沟道开关,具有热关断功能

产品详情

主要特征

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 200
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.2
RON (Ω) (typ) 0.07
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
0.93
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参量

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 200
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.2
RON (Ω) (typ) 0.07
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
0.93

主要特征

  • +2.7V to +5.5V Input Range
  • Programmable Current Limit
    • 0.2A to 1.2A Range
    • ±20% Accuracy
  • 1.2A Continuous Load Current
  • 1.8A Short-Circuit Current
  • Low Quiescent Current
    • 13µA at VIN = 3.3V
    • 0.1µA with Switch Off
  • Thermal Shutdown
  • Active-low FAULT Indicator Output
  • 0.07Ω On-Resistance

应用/用途

  • 接入总线插槽
  • PCMCIA槽
  • 便携式设备
  • USB集线器
  • USB端口

描述

The MAX893L 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 temperature.

The MAX893L's maximum programmed current limit is 1.2A. The typical short-circuit current is 1.5 times the programmed current; therefore, a 1.2A programmed limit will result in a 1.8A short-circuit current limit. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 13µA. When the switch is off, the supply current decreases to 0.1µA.

The MAX893L is available in an 8-pin SO package.

简化框图

MAX893L:典型工作电路 MAX893L:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

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Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心