MAX4173T中文资料低成本、SOT23封装、电压输出、高边电流检测放大器数据手册ADI规格书

描述 Description

The MAX4173 low-cost, precision, high-side current-sense amplifier is available in a tiny SOT23-6 package. It features a voltage output that eliminates the need for gain-setting resistors and it is ideal for today's notebook computers, cell phones, and other systems where current monitoring is critical. High-side current monitoring is especially useful in battery-powered systems, since it does not interfere with the ground path of the battery charger. The input common-mode range of 0 to +28V is independent of the supply voltage and ensures that the current-sense feedback remains viable even when connected to a battery in deep discharge. The MAX4173's wide 1.7MHz bandwidth makes it suitable for use inside battery charger control loops.
The combination of three gain versions and a user-selectable external sense resistor sets the full-scale current reading. This feature offers a high level of integration, resulting in a simple and compact current-sense solution.
The MAX4173 operates from a single +3V to +28V supply, typically draws only 420µA of supply current over the extended operating temperature range (-40°C to +85°C), and is offered in the space-saving SOT23 package.

How to Measure Current with the MAX4173 Current-Sense Amplifier and a Microcontroller
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特性 Features

• High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage
• +20V/V (MAX4173T)
• +100V/V (MAX4173H)
• ±3mV Input Offset Voltage (MAX4173T)
• 420µA Supply Current
• Available in Space-Saving SOT23 Package

应用 Application

• 蜂窝电话
• 笔记本电脑
• 便携式电池供电系统
• 精密电流源
• 智能电池组/充电器