INA219 Bi-directional DC Current Power Supply

Integrated Precision 12-Bit ADC: Features a high-accuracy delta-sigma ADC that measures both shunt voltage drop and bus voltage over a wide operating range.

Bi-Directional High-Side DC Monitoring: Monitors current flow and bus voltage up to +26V DC in both charging and discharging directions on high-side power rails.

Direct I2C / SMBus Digital Output: Communicates data directly over I^2C with up to 128 programmable slave addresses, offloading math and ADC sampling from the main host MCU.

Onboard 0.1 Ohm Precision Shunt Resistor: Equipped with an R100 (0.1 Ω ) 1% sensing resistor capable of handling currents up to ± 3.2A with minimal thermal drift.

Programmable Calibration & Power Savings: Features configurable averaging modes, bus voltage ranges (16V or 32V), and power-down sleep modes for low-power IoT designs.

Housing & Board Material: High-grade FR-4 glass-epoxy PCB with surface-mount INA219 IC, 0.1Ω shunt resistor, screw terminal block, and gold/tin-plated pin headers.

Technical Specifications:

Operating Voltage (V_CC): 3.0V - 5.5V DC.

Target Bus Voltage Range (V_BUS): 0V - +26V DC.

Max Continuous Current: ± 3.2A DC.

Communication Protocol: I²C / SMBus (SCL, SDA).

Color: Blue PCB with Green Terminal Block and Silver Pins.

Usage Advice: Connect VCC (3.3V-5V), GND, SCL, and SDA to your microcontroller; wire your DC power supply and load in-line across the screw terminal block (VIN+ / VIN-).

Maintenance: Keep terminal block screws properly tightened; handle with static-safe procedures and keep board free of moisture, oil, and metallic filings.

Essential High-Side DC Power Telemetry Module: Position as a standard digital current and voltage sensor for solar battery charge logging, USB power testing, quadcopter telemetry, and embedded robotics power monitoring.

Highlight Direct Digital Power Calculations: Emphasize how direct I²C telemetry and internal multiplication deliver current (mA), voltage (V), and power (mW) metrics directly without CPU floating-point overhead.

Recommended Cross-Sell Add-ons: Pair with INA226 IIC Bidirectional current sensor, INA169 Analog DC Current Sensor 60V 5A, WCS1500 Hall Effect Base Linear Current Sensor, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Current Sensor collection page as your core I²C bi-directional DC current and power supply breakout module.