BQ27520-G4 Datasheet, PDF (2/34 Pages) Texas Instruments – System-Side Impedance Track Fuel Gauge

bq27520-G4
SLUSB20B – NOVEMBER 2012 – REVISED DECEMBER 2015
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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 ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics: Supply Current................. 6
7.6 Digital Input and Output DC Characteristics ............. 6
7.7 Power-on Reset ........................................................ 6
7.8 2.5-V LDO Regulator ................................................ 6
7.9 Internal Clock Oscillators .......................................... 6
7.10 ADC (Temperature and Cell Measurement)
Characteristics ........................................................... 7
7.11 Integrating ADC (Coulomb Counter)
Characteristics ........................................................... 7
7.12 Data Flash Memory Characteristics........................ 7
7.13 I²C-Compatible Interface Communication Timing
Requirements............................................................. 8
7.14 Typical Characteristics ............................................ 9
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 12
8.5 Programming........................................................... 17
9 Application and Implementation ........................ 21
9.1 Application Information............................................ 21
9.2 Typical Application .................................................. 22
10 Power Supply Recommendations ..................... 26
10.1 Power Supply Decoupling ..................................... 26
11 Layout................................................................... 26
11.1 Layout Guidelines ................................................. 26
11.2 Layout Example .................................................... 27
12 Device and Documentation Support ................. 28
12.1 Documentation Support ........................................ 28
12.2 Community Resources.......................................... 28
12.3 Trademarks ........................................................... 28
12.4 Electrostatic Discharge Caution ............................ 28
12.5 Glossary ................................................................ 28
13 Mechanical, Packaging, and Orderable
Information ........................................................... 28
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (August 2013) to Revision B
Page
• Changed 32 Ahr to 14500-mAh ............................................................................................................................................. 1
• Deleted minimum and maximum values for Power-on reset hysteresis ................................................................................ 6
• Added Device Information table, ESD Ratings table, Feature Description section, Device Functional Modes,
Programming section, Application and Implementation section, Power Supply Recommendations section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information. ......................................... 12
• Changed Figure 6 ................................................................................................................................................................ 14
• Added Figure 7 .................................................................................................................................................................... 15
Changes from Original (November 2012) to Revision A
Page
• Aligned package description throughout datasheet................................................................................................................ 1
• Removed Ordering information table...................................................................................................................................... 4
2
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