MAX4374 - 低成本、微功耗、高边电流检测放大器 + 比较器 + 电压基准IC

MAX4374是Maxim美信半导体公司的一款放大器产品，MAX4374是低成本、微功耗、高边电流检测放大器 + 比较器 + 电压基准IC，本站介绍了MAX4374的封装应用图解、特点和优点、功能等，并给出了与MAX4374相关的Maxim元器件型号供参考。

MAX4374 - 低成本、微功耗、高边电流检测放大器 + 比较器 + 电压基准IC - 放大器 - 简便的电流监测/保护电路，采用微小的10引脚封装 - 美信半导体

产品概述

The MAX4373/MAX4374/MAX4375 low-cost, micropower, high-side current-sense supervisors contain a high-side current-sense amplifier, bandgap reference, and comparator with latching output. They feature a voltage output that eliminates the need for gain-setting resistors, making them ideal for today's notebook computers, cell phones, and other systems where battery/DC 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 0 to +28V input common-mode range is independent of the supply voltage, which ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge.

The comparator output of the MAX4373/MAX4374/ MAX4375 is latched to provide a turn-off flag that doesn't oscillate. In addition, the MAX4374/MAX4375 contain a second comparator for use in window-detection functions. The MAX4373/MAX4374/MAX4375 are available in three different gain versions (T = +20V/V,F = +50V/V, H = +100V/V) and use an external sense resistor to set the sensitivity of the input voltage to the load current. These features offer a high level of integration, resulting in a simple and compact current-sense solution.

The MAX4373/MAX4374/MAX4375 operate from a single +2.7V to +28V supply and consume 50µA. They are specified for the extended operating temperature range (-40°C to +85°C) and are available in 8-pin and 10-pin µMAX® packages.

关键特性

以下关键特性由Maxim美信半导体提供：

Integrated Current-Sensing Solution Simplifies High-Side Current Monitoring

Current-Sense Amplifier plus Internal Comparatorand Bandgap Reference with Improved Accuracy

1mV (max) Input Offset Voltage

2% (max) Full-Scale Accuracy

Internal Bandgap Reference (±1.6% Accuracy)

High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage Ensures Current Monitoring Even In Deep Discharge of Battery Pack

Low Power Consumption Extends Battery Life

50µA Supply Current

Single +2.7V to +28V Operating Supply

Latching Comparator Output Eliminates Oscillation

Three Gain Versions (+20V/V, +50V/V,+100V/V) Support Different Size Battery Packs

热门应用

蜂窝电话

通用系统/板级电流监视

笔记本电脑

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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