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双路、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

产品详情

主要特征

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 250
Current Limit (mA) (max) 250
# Power Switches 2
Fault Indicator No
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.05
RON (Ω) (typ) 0.25
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)
2.45
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参量

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 250
Current Limit (mA) (max) 250
# Power Switches 2
Fault Indicator No
Current Limit Accuracy (%) 15
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.05
RON (Ω) (typ) 0.25
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)
2.45

主要特征

  • +2.7V to +5.5V Input Range
  • Programmable Current Limits
  • Low Supply Current:
    • 16µA IQ at VIN = 3.3V
    • 0.1µA with Switch Off
  • Thermal Shutdown

应用/用途

  • 接入总线插槽
  • PCMCIA槽
  • 便携式设备

描述

The MAX894L/MAX895L smart, dual, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications. These switches operate with inputs from +2.7V to +5.5V, making them 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 MAX894L/MAX895L's maximum current limits are 500mA and 250mA, respectively. The current limit through the switches is programmed with resistors from SET A/SET B to ground. When the switches are on, the quiescent supply current is a low 16µA. When the switches are off, the supply current decreases to 0.1µA.

The MAX894L/MAX895L are available in an 8-pin SO package.

简化框图

MAX894L、MAX895L:典型工作电路 MAX894L、MAX895L: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

过滤搜索

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