INA230 Datasheet, PDF (1/35 Pages) Texas Instruments – High- or Low-Side Measurement

INA230
www.ti.com
SBOS601 – FEBRUARY 2012
High- or Low-Side Measurement,
Bidirectional CURRENT/POWER MONITOR with I²C™ Interface
Check for Samples: INA230
FEATURES
1
•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
APPLICATIONS
• Smartphones
• Tablets
• Servers
• Computers
• Power Management
• Battery Chargers
• Power Supplies
• Test Equipment
DESCRIPTION
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.
RELATED PRODUCTS
DESCRIPTION
DEVICE
Current/power monitor with watchdog, peak-hold,
and fast comparator functions
INA209
Zerø-drift, low-cost, analog current shunt monitor
series in small package
INA210, INA211,
INA212, INA213,
INA214
Zerø-drift, bidirectional current power monitor with
two-wire interface
INA219
High or low side, bidirectional current/power monitor
with two-wire interface
INA220
Power Supply
(0 V to 28 V)
High-
Side
Shunt
Load
Low-
Side
Shunt
BUS
INA230
V
I
HIGH-OR LOW-SIDE SENSING
C_BYPASS
0.1 mF
V_S
(Supply Voltage)
ADC
´
Power Register
Current Register
Voltage Register
Alert Register
SDA
SCL
2
IC
Interface
ALERT
A0
A1
GND
1
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.
2
All other trademarks are the property of their respective owners.
3
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