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MAX4173F, MAX4173H, MAX4173T

低成本、SOT23封装、电压输出、高边电流检测放大器

产品详情

主要特征

Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 150
VOS @25°C (µV) (max) 3000
Output Format Voltage
CMVR (V) (min) 0
CMVR (V) (max) 28
VCC (V) (min) 3
VCC (V) (max) 28
ICC (µA) (typ) 420
Bi-Dir. Curr. Sense No
Gain 100 V/V
20 V/V
50 V/V
Gain Accuracy @25°C (%) (max) 2.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
SOT23/6
Budgetary
Price (See Notes)
1.26
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参量

Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 150
VOS @25°C (µV) (max) 3000
Output Format Voltage
CMVR (V) (min) 0
CMVR (V) (max) 28
VCC (V) (min) 3
VCC (V) (max) 28
ICC (µA) (typ) 420
Bi-Dir. Curr. Sense No
Gain 100 V/V
20 V/V
50 V/V
Gain Accuracy @25°C (%) (max) 2.5
Oper. Temp. (°C) -40 to +85
Package/Pins SOIC (N)/8
SOT23/6
Budgetary
Price (See Notes)
1.26

主要特征

  • 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/用途

  • 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

描述

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.



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

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MAX4173F、MAX4173H、MAX4173T:典型工作电路 MAX4173F、MAX4173H、MAX4173T:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心