产品详情
主要特征
应用/用途
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 |
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 |
参量
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 |
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.
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 |