The 7Semi INA219 3-Channel DC Current Sensor Breakout is a compact module designed for high-side voltage/current monitoring across three independent channels. Each channel supports up to 26 V and 3.2 A with digital output via I²C, making it ideal for system power monitoring, battery management, motor control, IoT devices and multi-channel power analytics in embedded systems.

Technical Specifications:

• Number of Channels: 3 independent measurement channels
  
• Maximum Bus Voltage: Up to 26 V DC
  
• Maximum Current Per Channel: Up to 3.2 A
  
• Monitoring Capabilities: Voltage, Current, and Calculated Power
  
• Interface: I²C digital communication
  
• Programmable I²C Addressing: Up to 16 selectable addresses (for multiple boards)
  
• Accuracy: Up to ~0.5% measurement error (depending variant)
  
• Low-Side / High-Side Monitoring: Supports high-side measurement (shunt on supply side)
  
• Sense Resistor: Integrated 0.1 Ω 1% (typical value) for high-accuracy measurement
  
• Logic Supply: Compatible with 3.3 V or 5 V logic microcontrollers
  
• Board Format: Breakout board with header/pins for easy integration

Features:

• Triple-channel current and voltage monitoring in one compact module
  
• High-side measurement up to 26 V without disturbing ground reference
  
• Digital I²C interface allows easy integration with microcontrollers and SBCs
  
• Programmable addresses support multiple modules on a single I²C bus
  
• Low insertion-loss shunt resistor ensures minimal power waste
  
• Ready-to-use breakout board simplifies integration and measurement setup

Applications:

• Multi-channel battery monitoring systems (battery packs, UPS)
  
• Motor controller monitoring and overcurrent detection in robotics and machines
  
• Multi-rail power supply monitoring in embedded systems and power distribution units
  
• IoT devices and sensor nodes where power usage needs to be tracked or optimized
  
• Energy-usage analytics, power budgeting and consumption monitoring in development and production