INA226-Q1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
INA226-Q1 is an AEC-Q100-qualified, 16-bit I2C/SMBus current, voltage, and power monitor operating up to 36 V, featuring ultra-precise shunt measurement with 2.5 µA quiescent current, programmable alert, and automotive-grade reliability for safety-critical designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- INA226-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of INA226-Q1?
- AEC-Q100 automotive-grade qualification
- 16-bit ADC for current, voltage, and power measurement
- 36 V bus voltage monitoring range
- I2C/SMBus digital interface up to 400 kHz
- 2.5 µA quiescent current for low-power operation
- Programmable over/under-limit alert output
- ±1% gain error over full temperature range
What is INA226-Q1 used for?
INA226-Q1 is widely used in automotive power management systems, including battery monitoring, DC-DC converter supervision, and motor drive current sensing. It is also suitable for industrial power rails monitoring where AEC-Q100 reliability and 36 V bus tolerance are required. The device supports telecom and server power distribution applications demanding precise real-time energy measurement over I2C.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the INA226-Q1 datasheet?
INA226-Q1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for INA226-Q1?
Compatible alternatives and drop-in replacements for INA226-Q1:
Frequently Asked Questions
How accurately does INA226-Q1 measure current across its full temperature range?
INA226-Q1 achieves a maximum gain error of ±1% and offset voltage of ±10 µV across the full -40°C to +125°C automotive temperature range, enabling precise shunt-resistor-based current sensing in demanding environments.
Which automotive and industrial power rails can INA226-Q1 monitor?
INA226-Q1 supports common bus voltages up to 36 V, covering 12 V automotive, 24 V industrial, and 28 V telecom rails. Its 16-bit resolution delivers sub-milliamp current measurement, making it suitable for battery management, DC-DC converter monitoring, and motor drive supervision.
How does the programmable alert feature work on INA226-Q1?
The alert pin can be configured to trigger on over-current, under-voltage, over-voltage, or over-power conditions with user-defined thresholds written via the 400 kHz I2C interface, allowing the host microcontroller to respond within 1 ms to fault events.
Can INA226-Q1 be used with multiple devices on the same I2C bus?
Yes, INA226-Q1 supports up to 16 unique I2C addresses through the A0 and A1 address pins, enabling 16 independent monitor instances on a single 2-wire bus for multi-rail power systems in automotive or server applications.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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