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INA3221-Q1 Datasheet(PDF) 1 Page - Texas Instruments

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Part # INA3221-Q1
Description  Current and Voltage Monitor with Programmable Overcurrent Alerts
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA3221-Q1 Datasheet(HTML) 1 Page - Texas Instruments

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Power Supply
(0 V to 26 V)
Load 1
Load 2
Power Supply
(0 V to 26 V)
Load 3
Power Supply
(0 V to 26 V)
CBYPASS
0.1 µF
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
10 k
VPU
10 k
Product
Folder
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Buy
Technical
Documents
Tools &
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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.
INA3221-Q1
SBOS776B – MARCH 2016 – REVISED MARCH 2016
INA3221-Q1 Automotive, 26-V, Triple-Channel, Bidirectional, Zero-Drift, Low- or High-Side,
I2C-Compatible, Current and Voltage Monitor with Programmable Overcurrent Alerts
1
1 Features
1
Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
Device Temperature Grade 1: –40°C to 125°C
Device HBM ESD Classification Level 2
Device CDM ESD Classification Level C6
Senses Bus Voltages From 0 V to 26 V
Reports Shunt and Bus Voltage
High Accuracy:
Offset Voltage: ±80 µV (max)
Gain Error: 0.25% (max)
Configurable Averaging Options
Four Programmable Addresses
Programmable Alert and Warning Outputs
Power-Supply Operation: 2.7 V to 5.5 V
2 Applications
Infotainment
Rear-Seat Entertainment
Digital Clusters
Electronic Control Units
3 Description
The INA3221-Q1 is a three-channel, high-side current
and bus voltage monitor with an I2C- and SMBUS-
compatible interface. The INA3221-Q1 monitors both
shunt voltage drops and bus supply voltages, in
addition to having programmable conversion times
and
averaging
modes
for
these
signals.
The
INA3221-Q1 offers both critical and warning alerts to
detect multiple programmable out-of-range conditions
for each channel.
The INA3221-Q1 senses current on buses that can
vary from 0 V to 26 V. The device is powered from a
single 2.7-V to 5.5-V supply, and draws 350
μA (typ)
of supply current. The INA3221-Q1 is specified over
the operating temperature range of –40°C to +125°C.
The I2C- and SMBUS-compatible interface features
four programmable addresses.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA3221-Q1
VQFN (16)
4.00 mm x 4.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
Typical Application


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