MAX4172 - 低成本、高精度、高边电流检测放大器

MAX4172是Maxim美信半导体公司的一款放大器产品，MAX4172是低成本、高精度、高边电流检测放大器，本站介绍了MAX4172的封装应用图解、特点和优点、功能等，并给出了与MAX4172相关的Maxim元器件型号供参考。

MAX4172 - 低成本、高精度、高边电流检测放大器 - 放大器 - 低成本、高精度电流监测，用于便携式电池供电产品 - 美信半导体

产品概述

The MAX4172 is a low-cost, precision, high-side current-sense amplifier for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the battery charger's ground path. Wide bandwidth and ground-sensing capability make the MAX4172 suitable for closed-loop battery-charger and general-purpose current-source applications. The 0 to 32V input common-mode range is independent of the supply voltage, which ensures that current-sense feedback remains viable, even when connected to a battery in deep discharge.

To provide a high level of flexibility, the MAX4172 functions with an external sense resistor to set the range of load current to be monitored. It has a current output that can be converted to a ground-referred voltage with a single resistor, accommodating a wide range of battery voltages and currents.

An open-collector power-good output (active-low PG) indicates when the supply voltage reaches an adequate level to guarantee proper operation of the current-sense amplifier. The MAX4172 operates with a 3.0V to 32V supply voltage, and is available in a space-saving, 8-pin µMAX® or SO package.

关键特性

以下关键特性由Maxim美信半导体提供：

Ideal for High-Side Monitoring

3V to 32V Supply Operation

±0.5% Typical Full-Scale Accuracy Over Temperature

High Accuracy +2V to +32V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage

800kHz Bandwidth [VSENSE = 100mV (1C)]

200kHz Bandwidth [VSENSE = 6.25mV (C/16)]

Minimizes Board Space Requirements

µMAX and SO Packages

热门应用

电池供电应用

闭环电池充电器/电流源

能量管理

便携式PC：笔记本电脑、亚笔记本电脑、掌上电脑

便携式测试/测量系统

便携式/蜂窝电话

智能电池组/充电器

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