MAX4373:低成本、微功耗、高边电流检测放大器 + 比较器 + 电压基准IC

简便的电流监测/保护电路,采用微小的10引脚封装

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
  • Integrated Current-Sensing Solution Simplifies High-Side Current Monitoring
    • Current-Sense Amplifier plus Internal Comparator and Bandgap Reference with Improved 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
MAX4373、MAX4374、MAX4375:典型工作电路
MAX4373、MAX4374、MAX4375:典型工作电路
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
数据手册DataSheet
语言下载文件备注
英文MAX4373-MAX4375.pdfRev 5; 05/2015
关键参数
Part NumberOutput FormatCMVR
(V)
CMVR
(V)
VCC
(V)
VCC
(V)
ICC
(µA)
Bi-Dir. Curr. SenseVSENSE_FS
(mV)
VOS @25°C
(µV)
GainGain Accuracy @25°C
(%)
BW
(kHz)
Comp-
arators
ReferenceOper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtyprecomm.maxmax@ -3dBSee Notes
MAX4373Voltage0282.72850No
  • 100
  • 150
1000
  • 20 V/V
  • 50 V/V
  • 100 V/V
1.7
  • 110
  • 120
  • 200
1Bandgap-40 to +85
  • µMAX/8
  • SOIC(N)/8
$1.48 @1k
MAX43742
  • µMAX/10
  • SOIC(N)/14
$1.13 @1k
MAX43752
  • µMAX/10
  • SOIC(N)/14
$1.13 @1k
开发工具
质量和环境数据
相关产品
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  • MAX4372:低成本、UCSP/SOT23封装、微功耗、高边电流检测放大器,带有电压输出
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订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX4373FESA停止供货MAX4373FESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX4373FESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373FESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373FESA-T停止供货MAX4373FESA+TN.SO;8引脚-40°C至+85°C参考数据资料
MAX4373FEUA停止供货MAX4373FEUA+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373FEUA+生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373FEUA+T生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373FEUA-T停止供货MAX4373FEUA+TµMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373HESA停止供货MAX4373HESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX4373HESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX4373HESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373HESA-T停止供货MAX4373HESA+TN.SO;8引脚-40°C至+85°C参考数据资料
MAX4373HEUA停止供货MAX4373HEUA+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373HEUA+生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373HEUA+T生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373HEUA-T停止供货MAX4373HEUA+TµMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373TESA停止供货MAX4373TESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX4373TESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373TESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373TESA-T停止供货MAX4373TESA+TN.SO;8引脚-40°C至+85°C参考数据资料
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX4373TEUA停止供货MAX4373TEUA+µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373TEUA+生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373TEUA+T生产中µMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX4373TEUA-T停止供货MAX4373TEUA+TµMAX,;8引脚;15.6mm²-40°C至+85°CRoHS/无铅:否
MAX4373-MAX4375.pdf MAX4375
MAX4373.pdf MAX4373