BQ27546-G1 Datasheet, PDF (2/38 Pages) Texas Instruments – nullSingle-Cell Li-Ion Battery Fuel Gauge

bq27546-G1
SLUSC53A – MAY 2015 – REVISED DECEMBER 2015
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematic............................................. 1
5 Revision History..................................................... 2
6 Device Comparison Table..................................... 3
7 Pin Configuration and Functions ......................... 3
8 Specifications......................................................... 4
8.1 Absolute Maximum Ratings ...................................... 4
8.2 ESD Ratings.............................................................. 4
8.3 Recommended Operating Conditions....................... 4
8.4 Thermal Information .................................................. 4
8.5 Supply Current .......................................................... 5
8.6 Digital Input and Output DC Characteristics ............. 5
8.7 Power-On Reset........................................................ 5
8.8 2.5-V LDO Regulator ................................................ 5
8.9 Internal Clock Oscillators .......................................... 5
8.10 Integrating ADC (Coulomb Counter)
Characteristics ........................................................... 6
8.11 ADC (Temperature and Cell Voltage)
Characteristics ........................................................... 6
8.12 Data Flash Memory Characteristics........................ 6
8.13 HDQ Communication Timing Characteristics ......... 6
8.14 I²C-Compatible Interface Timing Characteristics .... 7
8.15 Typical Characteristics ............................................ 8
9 Detailed Description .............................................. 9
9.1 Overview ................................................................... 9
9.2 Functional Block Diagram ....................................... 10
9.3 Feature Description................................................. 10
9.4 Device Functional Modes........................................ 15
9.5 Programming........................................................... 20
9.6 Register Maps ......................................................... 22
10 Application and Implementation........................ 24
10.1 Application Information.......................................... 24
10.2 Typical Applications .............................................. 25
10.3 Application Curves ................................................ 29
11 Power Supply Recommendations ..................... 29
11.1 Power Supply Decoupling ..................................... 29
12 Layout................................................................... 30
12.1 Layout Guidelines ................................................. 30
12.2 Layout Example .................................................... 31
13 Device and Documentation Support ................. 32
13.1 Documentation Support ........................................ 32
13.2 Community Resources.......................................... 32
13.3 Trademarks ........................................................... 32
13.4 Electrostatic Discharge Caution ............................ 32
13.5 Glossary ................................................................ 32
14 Mechanical, Packaging, and Orderable
Information ........................................................... 32
5 Revision History
Changes from Original (May 2015) to Revision A
Page
• Changed the descriptions for the SRP and SRN pins ........................................................................................................... 3
• Changed Power-On Reset .................................................................................................................................................... 5
• Added "FULLSLEEP mode" to the introduction in Power Modes ....................................................................................... 15
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