INA3221-Q1 Monitor Datasheet

INA3221-Q1 Datasheet, PDF, Equivalent


Part Number

INA3221-Q1

Description

Current and Voltage Monitor

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download INA3221-Q1 Datasheet


INA3221-Q1
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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 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.
Power Supply
(0 V to 26 V)
Typical Application
Load 1
CBYPASS
0.1 µF
Power Supply
(0 V to 26 V)
VIN+2
VIN±2
VIN+1
CH 2
Load 2
Power Supply
(0 V to 26 V)
VIN+3
VIN±1
CH 1
ADC
CH 3
Bus
Voltages 1-3
Shunt
Voltages 1-3
Critical Limit
Alerts 1-3
Shunt Voltage
Sum Alerts
VIN±3
GND
VS (Supply
Voltage)
I2C-
and
SMBus-
Compatible
Interface
SDA
SCL
A0
VPU
VPU
Power Valid (PV)
Critical
Warning
Timing Control (TC)
Load 3
10 k
VS
10 k
1
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
INA3221-Q1
SBOS776B – MARCH 2016 – REVISED MARCH 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 6
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 15
8.5 Programming .......................................................... 19
8.6 Register Maps ......................................................... 23
9 Application and Implementation ........................ 35
9.1 Application Information............................................ 35
9.2 Typical Application ................................................. 35
10 Power Supply Recommendations ..................... 37
11 Layout................................................................... 37
11.1 Layout Guidelines ................................................. 37
11.2 Layout Example .................................................... 37
12 Device and Documentation Support ................. 38
12.1 Device Support...................................................... 38
12.2 Documentation Support ....................................... 38
12.3 Community Resources.......................................... 38
12.4 Trademarks ........................................................... 38
12.5 Electrostatic Discharge Caution ............................ 38
12.6 Glossary ................................................................ 38
13 Mechanical, Packaging, and Orderable
Information ........................................................... 38
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (March 2016) to Revision B
Page
• Changed HBM value from ±2000 V to ±2500 V in ESD Ratings table ................................................................................. 4
Changes from Original (March 2016) to Revision A
Page
• Changed from product preview to production data ................................................................................................................ 1
2 Submit Documentation Feedback
Product Folder Links: INA3221-Q1
Copyright © 2016, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community INA3221-Q1 SBOS776B – MARC H 2016 – REVISED MARCH 2016 INA3221-Q 1 Automotive, 26-V, Triple-Channel, Bid irectional, Zero-Drift, Low- or High-Si de, I2C-Compatible, Current and Voltage Monitor with Programmable Overcurrent Alerts 1 Features •1 Qualified for A utomotive Applications • AEC-Q100 Qua lified With the Following Results: – Device Temperature Grade 1: –40°C to 125°C – Device HBM ESD Classificati on Level 2 – Device CDM ESD Classific ation Level C6 • Senses Bus Voltages From 0 V to 26 V • Reports Shunt and Bus Voltage • High Accuracy: – Offs et Voltage: ±80 µV (max) – Gain Err or: 0.25% (max) • Configurable Averag ing Options • Four Programmable Addre sses • Programmable Alert and Warning Outputs • Power-Supply Operation: 2. 7 V to 5.5 V 2 Applications • Infotai nment • Rear-Seat Entertainment • D igital Clusters • Electronic Control Units 3 Description The INA3221-Q1 is a three-channel, high-side curr.
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