INA226 I2C Current, Voltage and Power Monitor – 0–36 V

It can monitor bus voltage (0 V to 36 V)in either low-side or high-side configurations, making it a versatile tool for powerful and reliable measurements in embedded applications.

It contains a precision differential amplifier, an ADC and output-data processing logic. Readings are available over the I2C bus, with support for up to 16 different addresses using pins A0/A1. The ALERT output can trigger an alert when configured limits are exceeded.

🔧 Features:

• Voltage measuring range (VBUS): 0 – 36 V

• Current input: Differential input (IN+ / IN−)

• Output: Calculation of current, voltage and power over I2C

• Accuracy:
  – Gain error: maximum 0.1 %
  – Offset: maximum 10 μV

• Averaging: Configurable measurement averaging

• Alarm output: ALERT pin (configurable trigger)

• Power supply: 2.7 V – 5.5 V DC

• I2C addressing: 16 programmable addresses (via A0/A1)

• Package: 10-pin VSSOP package on the board (WCMCU-226 module)

📌 Pin description:

📦 Applications:

• Measuring energy consumption of microcontrollers, batteries and power supplies

• Smart chargers

• Servers and computing equipment

• Telecommunications equipment

• Laboratory and test instruments

Arduino/ESP32 sample code coming soon. 💻