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低成本、SC70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.) 100
Output Format Voltage
CMVR (V) (min) 2
CMVR (V) (max) 28
VCC (V) (min) 3
VCC (V) (max) 28
ICC (µA) (typ) 500
Bi-Dir. Curr. Sense No
Gain 100 V/V
20 V/V
50 V/V
Gain Accuracy @25°C (%) (max) 4.5
Oper. Temp. (°C) -40 to +125
Package/Pins SC70/5
SOT23/6
Budgetary
Price (See Notes)
0.98
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参量

Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 100
Output Format Voltage
CMVR (V) (min) 2
CMVR (V) (max) 28
VCC (V) (min) 3
VCC (V) (max) 28
ICC (µA) (typ) 500
Bi-Dir. Curr. Sense No
Gain 100 V/V
20 V/V
50 V/V
Gain Accuracy @25°C (%) (max) 4.5
Oper. Temp. (°C) -40 to +125
Package/Pins SC70/5
SOT23/6
Budgetary
Price (See Notes)
0.98

主要特征

  • Low-Cost, Compact, Current-Sense Solution
  • Three Gain Versions Available
    • +20V/V (MAX4073T)
    • +50V/V (MAX4073F)
    • +100V/V (MAX4073H)
  • ±1.0% Full-Scale Accuracy
  • 500µA Supply Current
  • Wide 1.8MHz Bandwidth
  • +3V to +28V Operating Supply
  • Wide +2V to +28V Common-Mode Range Independent of Supply Voltage
  • Automotive Temperature Range (-40°C to +125°C)
  • Available in Space-Saving 5-Pin SC70 Package

应用/用途

描述

The MAX4073 low-cost, high-side current-sense amplifier features a voltage output that eliminates the need for gain-setting resistors making it ideal for cell phones, notebook computers, PDAs, and other systems where current monitoring is crucial. High-side current monitoring does not interfere with the ground path of the battery charger making the MAX4073 particularly useful in battery-powered systems. The input common-mode range of +2V to +28V is independent of the supply voltage. The MAX4073's wide 1.8MHz bandwidth makes it suitable for use inside battery-charger control loops.

The combination of three gain versions and a selectable external-sense resistor sets the full-scale current reading. The MAX4073 offers a high level of integration, resulting in a simple and compact current-sense solution.

The MAX4073 operates from a +3V to +28V single supply and draws only 0.5mA of supply current. This device is specified over the automotive operating temperature range (-40°C to +125°C) and is available in a space-saving 5-pin SC70 package (half the size of the SOT23).

For a similar device in a 6-pin SOT23 with a wider common-mode voltage range (0 to +28V), see the MAX4173 data sheet.

简化框图

MAX4073F、MAX4073H、MAX4073T:典型工作电路 MAX4073F、MAX4073H、MAX4073T:典型工作电路 Zoom icon

Technical Docs

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