INA230 MONITOR Datasheet
Bidirectional CURRENT/POWER MONITOR
|Total Page||30 Pages|
SBOS601 – FEBRUARY 2012
High- or Low-Side Measurement,
Bidirectional CURRENT/POWER MONITOR with I2C™ Interface
Check for Samples: INA230
•23 Bus Voltage Sensing From 0 V to +28 V
• High- or Low-Side Sensing
• Current, Voltage, and Power Reporting
• High Accuracy:
– 0.5% Gain Error (Max)
– 50-μV Offset (Max)
• Configurable Averaging Options
• Programmable Alert Threshold
• Power Supply Operation: 2.7 V to 5.5 V
• Package: 3-mm x 3-mm, 16-Pin QFN
• Power Management
• Battery Chargers
• Power Supplies
• Test Equipment
The INA230 is a current-shunt and power monitor
with an I2C interface that features 16 programmable
addresses. The INA230 monitors both shunt voltage
drops and bus supply voltage. Programmable
calibration value, conversion times, and averaging,
combined with an internal multiplier, enable direct
readouts of current in amperes and power in watts.
The INA230 senses current on buses that vary from 0
V to +28 V, with the device powered from a single
+2.7 V to +5.5 V supply, drawing 330 μA (typical) of
supply current. The INA230 is specified over the
operating temperature range of –40°C to +125°C.
Current/power monitor with watchdog, peak-hold,
and fast comparator functions
Zerø-drift, low-cost, analog current shunt monitor
series in small package
Zerø-drift, bidirectional current power monitor with
High or low side, bidirectional current/power monitor
with two-wire interface
(0 V to 28 V)
HIGH-OR LOW-SIDE SENSING
´ Power Register
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated
SBOS601 – FEBRUARY 2012
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the
INA230 product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Over operating free-air temperature range (unless otherwise noted).
Supply voltage, VS
Analog inputs, IN+, IN–
Differential (VIN+) – (VIN–)(2)
Input current into any pin
Open-drain digital output current
Human body model (HBM)
Charged-device model (CDM)
Machine model (MM)
–30 to +30
–0.3 to +30
GND – 0.3 to +6
GND – 0.3 to VS + 0.3
–65 to +150
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
(2) VIN+ and VIN– may have a differential voltage of –30 V to +30 V; however, the voltage at these pins must not exceed the range –0.3 V to
2 Copyright © 2012, Texas Instruments Incorporated
|Features||INA230 www.ti.com SBOS601 – FEBRUARY 2012 High- or Low-Side Measurement, Bi directional CURRENT/POWER MONITOR with I2C™ Interface Check for Samples: INA 230 FEATURES 1 •23 Bus Voltage Sensi ng From 0 V to +28 V • High- or Low-S ide Sensing • Current, Voltage, and P ower Reporting • High Accuracy: – 0 .5% Gain Error (Max) – 50-μV Offset (Max) • Configurable Averaging Option s • Programmable Alert Threshold • Power Supply Operation: 2.7 V to 5.5 V • Package: 3-mm x 3-mm, 16-Pin QFN AP PLICATIONS • Smartphones • Tablets • Servers • Computers • Power Man agement • Battery Chargers • Power Supplies • Test Equipment DESCRIPTIO N The INA230 is a current-shunt and pow er monitor with an I2C interface that f eatures 16 programmable addresses. The INA230 monitors both shunt voltage drop s and bus supply voltage. Programmable calibration value, conversion times, an d averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts. The INA230 senses current o.|
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