Manuali utente per Texas Instruments System-Side Impedance Track(TM) Fuel Gauge bq27500

Sommario

• 1  INTRODUCTION

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  • 1.1 FEATURES

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  • 1.2  APPLICATIONS

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  • 1.3  DESCRIPTION

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• Table of Contents

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• 2 DEVICE INFORMATION

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  • 2.1 AVAILABLE OPTIONS

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  • 2.2 PIN DIAGRAMS

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  • 2.3 TERMINAL FUNCTIONS

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• 3 ELECTRICAL SPECIFICATIONS

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  • 3.1 ABSOLUTE MAXIMUM RATINGS

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  • 3.2  RECOMMENDED OPERATING CONDITIONS

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  • 3.3  POWER-ON RESET

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  • 3.4  INTERNAL TEMPERATURE SENSOR CHARACTERISTICS

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  • 3.5  HIGH FREQUENCY OSCILLATOR

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  • 3.6  LOW FREQUENCY OSCILLATOR

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  • 3.7  INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS

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  • 3.8  ADC (TEMPERATURE AND CELL MEASUREMENT) CHARACTERISTICS

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  • 3.9  DATA FLASH MEMORY CHARACTERISTICS

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  • 3.10  I2C-COMPATIBLE INTERFACE COMMUNICATION TIMING CHARACTERISTICS

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• 4 GENERAL DESCRIPTION

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  • 4.1 DATA COMMANDS

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    • 4.1.1 STANDARD DATA COMMANDS

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    • 4.1.2 EXTENDED DATA COMMANDS

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  • 4.2 DATA FLASH INTERFACE

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    • 4.2.1 ACCESSING THE DATA FLASH

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  • 4.3 MANUFACTURER INFORMATION BLOCKS

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  • 4.4 ACCESS MODES

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  • 4.5 SEALING/UNSEALING DATA FLASH

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  • 4.6 DATA FLASH SUMMARY

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• 5 FUNCTIONAL DESCRIPTION

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  • 5.1 FUEL GAUGING

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  • 5.2 IMPEDANCE TRACK VARIABLES

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  • 5.3 DETAILED DESCRIPTION OF DEDICATED PINS

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    • 5.3.1 The Operation Configuration Register

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    • 5.3.2 Pin Function Code Descriptions

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    • 5.3.3 BAT_LOW Pin

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    • 5.3.4 Power Path Control with the BAT_GD Pin

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    • 5.3.5 Battery Detection Using the BI/TOUT Pin

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  • 5.4 TEMPERATURE MEASUREMENT

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  • 5.5 OVERTEMPERATURE INDICATION

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    • 5.5.1 Overtemperature: Charge

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    • 5.5.2 Overtemperature: Discharge

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  • 5.6 CHARGING AND CHARGE-TERMINATION INDICATION

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    • 5.6.1 Detecting Charge Termination

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    • 5.6.2 Charge Inhibit

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  • 5.7 POWER MODES

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    • 5.7.1 NORMAL MODE

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    • 5.7.2 SLEEP MODE

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    • 5.7.3 BAT INSERT CHECK MODE

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    • 5.7.4 HIBERNATE MODE

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  • 5.8 POWER CONTROL

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    • 5.8.1 RESET FUNCTIONS

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    • 5.8.2 WAKE-UP COMPARATOR

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    • 5.8.3 FLASH UPDATES

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  • 5.9 AUTOCALIBRATION

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• 6 APPLICATION-SPECIFIC INFORMATION

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  • 6.1 BATTERY PROFILE STORAGE AND SELECTION

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    • 6.1.1 General Profile Description

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    • 6.1.2 Activities Upon Pack Insertion

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  • 6.2 APPLICATION-SPECIFIC FLOW AND CONTROL

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    • 6.2.1 Simple Battery (bq27500 Only)

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    • 6.2.2 Battery With Resistor ID (bq27501 Only)

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• 7 COMMUNICATIONS

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  • 7.1 I2C INTERFACE

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• 8 REFERENCE SCHEMATICS

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  • 8.1 SCHEMATIC

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