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主要特征
应用/用途
Parametric specs for Current Sense Amplifiers
| VSENSE_FS (mV) (recomm.) | 100 150 |
| VOS @25°C (µV) (max) | 1000 |
| Output Format | Voltage |
| CMVR (V) (min) | 0 |
| CMVR (V) (max) | 28 |
| VCC (V) (min) | 2.7 |
| VCC (V) (max) | 28 |
| ICC (µA) (typ) | 50 |
| Bi-Dir. Curr. Sense | No |
| Gain | 100 V/V 20 V/V 50 V/V |
| Gain Accuracy @25°C (%) (max) | 1.7 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 1.64 |
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参量
Parametric specs for Current Sense Amplifiers
| VSENSE_FS (mV) (recomm.) | 100 150 |
| VOS @25°C (µV) (max) | 1000 |
| Output Format | Voltage |
| CMVR (V) (min) | 0 |
| CMVR (V) (max) | 28 |
| VCC (V) (min) | 2.7 |
| VCC (V) (max) | 28 |
| ICC (µA) (typ) | 50 |
| Bi-Dir. Curr. Sense | No |
| Gain | 100 V/V 20 V/V 50 V/V |
| Gain Accuracy @25°C (%) (max) | 1.7 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 1.64 |
主要特征
- Integrated Current-Sensing Solution Simplifies High-Side Current Monitoring
- Current-Sense Amplifier plus Internal Comparator and Bandgap Reference with Improved Accuracy
- 1mV (max) Input Offset Voltage
- 2% (max) Full-Scale Accuracy
- Internal Bandgap Reference (±1.6% 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
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 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.
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.
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