INA210 datasheet(1/50 Pages) TI2

Part #	INA210

Description	INA3221 26V, Triple Channel, 13-Bit, I2C Output Current and Voltage Monitor With Alerts

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Manufacturer	TI2 [Texas Instruments]

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INA3221 26V, Triple Channel, 13-Bit, I2C Output Current and Voltage Monitor With

Alerts

1 Features

• Senses bus voltages from 0V to 26V

• Reports shunt and bus voltage

• High accuracy:

– Offset voltage: ±80µV (maximum)

– Gain error: 0.25% (maximum)

• Configurable averaging options

• Four programmable addresses

• Programmable alert and warning outputs

• Power-supply operation: 2.7V to 5.5V

2 Applications

• Computers

• Power management

• Telecom equipment

• Battery chargers

• Power supplies

• Test equipment

• Data Centers

3 Description

The INA3221 is a three-channel, high-side current

and bus voltage monitor with an I2C- and SMBUS-

compatible interface. The INA3221 monitors both

shunt voltage drops and bus supply voltages, in

addition to having programmable conversion times

and averaging modes for these signals. The INA3221

offers both critical and warning alerts to detect

multiple programmable out-of-range conditions for

each channel.

The INA3221 senses current on buses that can vary

from 0V to 26V. The device is powered from a

single 2.7V to 5.5V supply, and draws 350μA (typ)

of supply current. The INA3221 is specified over the

operating temperature range of –40°C to +125°C. The

I2C- and SMBUS-compatible interface features four

programmable addresses.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

INA3221

RGV (VQFN, 16)

4.00mm × 4.00mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

Power Supply

(0V to 26V)

Load 1

Load 2

Power Supply

(0V to 26V)

Load 3

Power Supply

(0V to 26V)

CBYPASS

0.1µF

VS (Supply

Voltage)

CH 1

CH 2

VIN–1

VIN+1

VIN–2

VIN+2

CH 3

VIN–3

VIN+3

I

2C-

and

SMBus-

Compatible

Interface

SDA

SCL

A0

Critical

Warning

GND

ADC

Shunt

Voltages 1-3

Critical Limit

Alerts 1-3

Bus

Voltages 1-3

Power Valid (PV)

Timing Control (TC)

Shunt Voltage

Sum Alerts

VS

VPU

10kΩ

VPU

10kΩ

Typical Application

INA3221

SBOS576C – MAY 2012 – REVISED SEPTEMBER 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

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