MAX4173H

低成本、SOT23封装、电压输出、高边电流检测放大器


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说明

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



How to Shrink Your Isolated Power Design with the MAX17681 Iso Buck Technology

MAX4173F、MAX4173H、MAX4173T:典型工作电路 MAX4173F、MAX4173H、MAX4173T:典型工作电路 放大+

关键特性

  • 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

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

请查看具体的参数规格 Current Sense Amplifiers (52)


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)
ComparatorsOper. Temp.
(°C)
Package/PinsBudgetary
Price
(min)(max)(min)(max)(typ)(recomm.)(max)(max)(@ -3dB)(See Notes)
MAX4173 Voltage028328420No1503000
100 V/V
20 V/V
50 V/V
2.5
1200
1400
1700
0-40 to +85
SOIC (N)/8
SOT23/6
$1.19 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX4173EVKIT: MAX4173评估板
产品可靠性报告: MAX4173H.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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    类型 编号 标题
    评估板6231MAX4173EVKIT MAX4173评估板