INA3221-Q1 - AEC-Q100, 26V, Triple, Bi-Directional, Low-/High-Side, I2C Out Current/Voltage Monitor w/Alerts

The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I²C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.

The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40°C to +125°C. The I²C- and SMBUS-compatible interface features four programmable addresses.

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
  • Device Temperature Grade 1: –40°C
    to 125°C
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C6
• Senses Bus Voltages From 0 V to 26 V
• Reports Shunt and Bus Voltage
• High Accuracy:
  • Offset Voltage: ±80 µV (max)
  • Gain Error: 0.25% (max)
• Configurable Averaging Options
• Four Programmable Addresses
• Programmable Alert and Warning Outputs
• Power-Supply Operation: 2.7 V to 5.5 V