MAX4173F|MAX4173H|MAX4173T - 低成本、SOT23封装、电压输出、高边电流检测放大器

MAX4173F|MAX4173H|MAX4173T - 低成本、SOT23封装、电压输出、高边电流检测放大器 - 美信芯片 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

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.

关键特性

以下关键特性由Maxim美信半导体提供：

Low-Cost, Compact Current-Sense Solution

High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage

Three Gain Versions Available

+20V/V (MAX4173T)

+50V/V (MAX4173F)

+100V/V (MAX4173H)

±0.5% Full-Scale Accuracy

±3mV Input Offset Voltage (MAX4173T)

Wide 1.7MHz Bandwidth (MAX4173T)

420µA Supply Current

Available in Space-Saving SOT23 Package

热门应用

蜂窝电话

通用系统/板级电流监视

笔记本电脑

PA偏置控制

便携式电池供电系统

电源管理系统

精密电流源

智能电池组/充电器

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