GY-471 3A Current Sensor Module With Professional MAX471 Chipset High Accuracy 0-3A Measurement Range for Arduino, and Microcontroller Projects - RS1472

Description :

The GY-471 3A Current Sensor Module are precision, bidirectional current-sense amplifiers designed for critical battery monitoring in portable devices like laptops, smartphones, and other battery-powered systems. These integrated circuits enable high-side current monitoring, which minimizes interference with ground paths associated with battery chargers or monitoring circuits in "smart" batteries.

The MAX471 incorporates an internal 35mΩ current-sense resistor, allowing for accurate measurement of battery currents up to ±3A. For applications requiring greater flexibility or higher current measurements, the MAX472 operates with external sense and gain-setting resistors, providing customized measurement ranges.

Both devices feature a current output that can be easily converted to a ground-referenced voltage using a single resistor, accommodating a wide range of battery voltages and current levels. An open-collector SIGN output pin provides a clear indication of the current direction, enabling the user to monitor whether the battery is being charged or discharged.

These 3A Current Sensor Module energy-efficient devices operate from a wide supply voltage range of 3V to 36V while consuming minimal power, drawing less than 100µA over the entire operating temperature range. Additionally, a shutdown mode further reduces power consumption to a mere 18µA, extending battery life in low-power applications.

Specification:

• Operating Voltage (V): 3 to 36
• Operating Current (A): +/- 3A
• Sensor: MAX471
• Sensor Outputs: 1V / Amp

Features :

• Monitors current flow without interfering with ground connections.
• 2% accuracy over temperature ensures reliable readings.
• Handles up to 3A with the internal resistor (MAX471) and higher currents with an external resistor (MAX472).
• Operates from 3V to 36V, suitable for various applications.
• Available in 8-pin DIP and SO packages for easy integration.
• Draws only 100µA maximum supply current and features an 18µA shutdown mode for extended battery life.

Pin Description:

Sensor
RS+.........Load a positive supply (3 to 25V)
RS-..........Connect to load or charger

Interface:
RS+.........Alternative load positive supply (3 to 25V)
GND.........Connect to loads 0V/GND supply
OUT..........Current sensor output (1V / Amp, 3V max)
SIGN........Current flow direction. An open-collector logic output (low = current flow from RS+ to RS-).
GND.........Alternative GND (Connect to loads 0V/GND supply)
RS-...........Alternative load/charger connection.

Package Included:

1 x GY-471 3A Current Sensor Module