INA219BIDCNR Power Path Management IC Current & Power Monitors & Regulators 0-Drift,Bi-dir Current/Pwr Mon

INA219BIDCNR Power Path Management IC Current & Power Monitors & Regulators 0-Drift,Bi-dir Current/Pwr Mon

1 Features

• Senses Bus Voltages from 0 to 26 V

• Reports Current, Voltage, and Power

• 16 Programmable Addresses

• High Accuracy: 0.5% (Maximum) Over Temperature (INA219B)

• Filtering Options

• Calibration Registers

• SOT23-8 and SOIC-8 Packages

2 Applications

• Servers

• Telecom Equipment

• Notebook Computers

• Power Management

• Battery Chargers

• Welding Equipment

• Power Supplies

• Test Equipment

3 Description

The INA219 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.

Device Information