u

Power Register

Curren t Re gister

I

PMBus

Compatible

Inte rface

Voltage Register

GND

VBUS

ADC

V

I

A0

A1

ALE RT

SDA

SCL

C

0.1 µF

BYPASS

High-

Side

Shu nt

Low-

Side

Shu nt

Loa d

Aler t Register

VS

Sup ply Vo ltag e

(2.7 V to 5.5 V)

Bus Voltage

(0 V to 36 V)

IN-

Power Accumulator

Copyright © 201 7, Texas Instrumen ts Incorpor ate d

INA233

IN+

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

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.

INA233

SBOS790 – APRIL 2017

INA233 High-Side or Low-Side Measurement, Bidirectional Current and Power Monitor

1

1 Features

1

•

Senses Bus Voltages From 0 V to 36 V

•

High-Side or Low-Side Sensing

•

Reports Current, Voltage, and Power

•

Integrated Power Accumulator for Energy and

Average Power Monitoring

•

High Accuracy:

–

0.1% Gain Error (Max)

–

10-µV Offset (Max)

•

Configurable Averaging Options

•

Independent Alert Limits for Current, Bus Voltage,

and Power

•

•

16 Programmable Addresses

•

Operates From a 2.7-V to 5.5-V Power Supply

•

10-Pin, DGS (VSSOP) Package

2 Applications

•

Servers

•

Telecom Infrastructure

•

High-Performance Computing

•

Power Metering

•

Battery Chargers

•

Power Supply

•

Test Equipment

3 Description

The INA233 device is a current, voltage, and power

interface that is compliant with digital bus voltages

from 1.8 V to 5.0 V. The device monitors and reports

values for current, voltage, and power. The integrated

power accumulator can be used for energy or

average

power

calculations.

Programmable

calibration value, conversion times, and averaging

when combined with an internal multiplier enable

direct readouts of current in amperes and power in

watts.

The INA233 senses current on common-mode bus

voltages that can vary from 0 V to 36 V, independent

of the supply voltage. The device operates from a

single 2.7-V to 5.5-V supply, drawing a typical supply

current of 310 µA in normal operation. The device

can be placed in a low-power standby mode where

the typical operating current is only 2 µA. The device

is specified over the operating temperature range

between –40°C and +125°C and features up to 16

programmable addresses.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

INA233

VSSOP (10)

3.00 mm x 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

High-Side or Low-Side Sensing Application