INA233 Datasheet, PDF (1/48 Pages) Texas Instruments – High-Side or Low-Side Measurement, Bidirectional Current and Power Monitor With I2C-, SMBus-, and PMBus-Compatible Interface

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INA233
SBOS790 – APRIL 2017
INA233 High-Side or Low-Side Measurement, Bidirectional Current and Power Monitor
With I²C-, SMBus-, and PMBus-Compatible Interface
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
• 1.8-V Compliant I²C, SMBus, PMBus Interface
• 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
monitor with an I²C-, SMBus-, and PMBus-compatible
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.
Bus Voltage
(0 V to 36 V)
High-Side or Low-Side Sensing Application
Sup ply Vo ltag e
(2.7 V to 5.5 V)
C _BYPASS
0.1 µF
High-
Side
Shu nt
Loa d
Low-
Side
Shu nt
VBUS
V
IN+
I
IN-
ADC
INA233
u
Power Register
Power Accumulator
Curren t Re gister
Voltage Register
Aler t Register
VS
I²C-, SMBus-,
PMBus
Compatible
Inte rface
SDA
SCL
ALE RT
A0
A1
GND
1
Copyright © 201 7, Texas Instrumen ts Incorpor ate d
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.