1. Product: GY-471 MAX471 Current Sensor Module
2. Operating voltage: 3V – 36V
3. Operating current: +/- 3A
4. Sensor: MAX471
5. Soldering: Unsoldered components

The MAX471/MAX472 are complete, bidirectional, highside current-sense amplifiers for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems since it does not interfere with the ground paths of the battery chargers or monitors often found in “smart” batteries.

The MAX471 has an internal 35mΩ current-sense resistor and measures battery currents up to ±3A. For applications requiring higher current or increased flexibility, the MAX472 functions with external sense and gain-setting resistors. Both devices have a current output that can be converted to a ground-referred voltage with a single resistor, allowing a wide range of battery voltages and currents.

An open-collector SIGN output indicates current-flow direction, so the user can monitor whether a battery is being charged or discharged. Both devices operate from 3V to 36V, draw less than 100µA over temperature, and include an 18µA max shutdown mode.

Features:

1. Complete High-Side Current Sensing
2. Precision Internal Sense Resistor (MAX471)
3. 2% Accuracy Over Temperature
4. Monitors Both Charge and Discharge
5. 3A Sense Capability with Internal Sense Resistor (MAX471)
6. Higher Current-Sense Capability with External Sense Resistor (MAX472)
7. 100µA Max Supply Current
8. 18µA Max Shutdown Mode
9. 3V to 36V Supply Operation
10. 8-Pin DIP/SO Packages
11. Customization: Suitable for electronic projects
12. Application: Current measurement in circuits

Package Includes:

1 x Unsoldered GY-471 3A Range MAX471 Current Sensor Module