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MAX4372
模拟信号 放大器 MAX4372
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MAX4372, MAX4372F, MAX4372H, MAX4372T

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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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产品详情

请参见参数规范 Current Sense Amplifiers

主要特征

请参见参数规范 Current Sense Amplifiers
Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 100
150
VOS @25°C (µV) (max) 1300
Output Format Voltage
CMVR (V) (min) 0
CMVR (V) (max) 28
VCC (V) (min) 2.7
VCC (V) (max) 28
ICC (µA) (typ) 30
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
SOT23/5
UCSP (B)/6
Budgetary
Price (See Notes) 		0.89
请参见参数规范 Current Sense Amplifiers
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简化框图

Technical Docs

数据资料 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 Sep 15, 2011
应用笔记 超小型UCSP™封装器件改善便携设备的电池管理\r\n
应用笔记 直流误差计算器简化检流放大器的优化
应用笔记 带有输入串联电阻的电流检测放大器的性能
应用笔记 检流放大器的瞬态过压保护
应用笔记 High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing
设计指南 高边电流检测测量:电路和原理

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在Maxim的知识库中搜索技术问题的答案

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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 。

参量

Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 100
150
VOS @25°C (µV) (max) 1300
Output Format Voltage
CMVR (V) (min) 0
CMVR (V) (max) 28
VCC (V) (min) 2.7
VCC (V) (max) 28
ICC (µA) (typ) 30
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
SOT23/5
UCSP (B)/6
Budgetary
Price (See Notes) 		0.89
See parametric specs for Current Sense Amplifiers

主要特征

  • Low-Cost, Compact Current-Sense Solution
  • 30µA Supply Current
  • 2.7V to 28V Operating Supply
  • 0.18% Full-Scale Accuracy
  • 0.3mV Input Offset Voltage
  • Low 1.5Ω Output Impedance
  • Three Gain Versions Available
    • 20V/V (MAX4372T)
    • 50V/V (MAX4372F)
    • 100V/V (MAX4372H)
  • High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage
  • Available in a Space-Saving 5-Pin SOT23 Package and 3 x 2 UCSP™ (1mm x 1.5mm) Package

应用/用途

  • 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

描述

The MAX4372 low-cost, precision, high-side current-sense amplifier is available in a tiny, space-saving SOT23 5-pin package. Offered in three gain versions (T = 20V/V, F = 50V/V, and H = 100V/V), this device operates from a single 2.7V to 28V supply and consumes only 30µA. It features a voltage output that eliminates the need for gain-setting resistors and is 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 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 2-cell battery pack in deep discharge.

The user can set the full-scale current reading by choosing the device (T, F, or H) with the desired voltage gain and selecting the appropriate external sense resistor. This capability offers a high level of integration and flexibility, resulting in a simple and compact current-sense solution. For higher bandwidth applications, refer to the MAX4173T/F/H data sheet.

简化框图

MAX4372、MAX4372F、MAX4372H、MAX4372T：典型工作电路 MAX4372、MAX4372F、MAX4372H、MAX4372T：典型工作电路 Zoom icon

Technical Docs

数据资料 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 Sep 15, 2011
应用笔记 超小型UCSP™封装器件改善便携设备的电池管理\r\n
应用笔记 直流误差计算器简化检流放大器的优化
应用笔记 带有输入串联电阻的电流检测放大器的性能
应用笔记 检流放大器的瞬态过压保护
应用笔记 High-Accuracy Current-Sense Amplifier Enables Current Sensing and Current Sharing
设计指南 高边电流检测测量:电路和原理

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 。