INA250A4PWR Power Path Management IC Current & Power Monitors & Regulators Current Shunt Monitor

1 Features

• Precision Integrated Shunt Resistor:

• – Shunt Resistor: 2 mΩ

• – Shunt Resistor Tolerance: 0.1% (Max)

• – 15 A Continuous from –40°C to 85°C

• – 0°C to 125°C Temperature Coefficient: 10 ppm/°C

• High Accuracy:

  • – Gain Error (Shunt and Amplifier): 0.3% (Max)

  • – Offset Current: 50 mA (Max, INA250A2)

• Four Available Gains:

  • – INA250A1: 200 mV/A

  • – INA250A2: 500 mV/A

  • – INA250A3: 800 mV/A

  • – INA250A4: 2 V/A

• Wide Common-Mode Range: –0.1 V to 36 V

• Specified Operating Temperature: –40°C to 125°C

2 Applications

• Test Equipment

• Power Supplies

• Servers

• Telecom Equipment

• Automotive

• Solar Inverters

• Power Management

3 Description

The INA250 is a voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high- side current-shunt monitor that allows an external reference to be used to measure current flowing in both directions through the internal current-sensing resistor sensor. The integration of the precision current-sensing resistor provides calibration equivalent measurement accuracy with ultra-low temperature drift performance and ensures an optimized Kelvin layout for the sensing resistor is always obtained.

The INA250 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of 125°C. The INA250 operates from a single 2.7-V to 36-V supply and draws a maximum of 300 μA of supply current. All INA250 gain versions are specified over the extended operating temperature range (–40°C to 125°C), and are available in a TSSOP-16 package.

Device Information