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BQ33100 Super Capacitor Manager Datasheet (Rev. C)

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BQ33100 Super Capacitor Manager Datasheet (Rev. C) Product Order Technical Tools & Support & Reference Folder Now Documents Software Community Design BQ33100 SLUS987C –JANUARY 2011–REVISED DECEMBER 2019 BQ33100 Super Capacitor Manager 1 Features 2 Applications 1• Fully integrated 2-, 3-, 4-, and 5-series Super • RAID systems Capacitor Manager • Server blade cards • Can be used with up to 9-series capacitors • UPS without individual integrated capacitor monitoring • Medical and test equipment and balancing • Portable instruments • Active capacitor voltage balancing – Prevents super capacitor overvoltage during 3 Description charging The Texas Instruments BQ33100 Super Capacitor • Capacitor health monitoring Manager is a fully integrated, single-chip solution that – Capacitance learning provides a rich array of features for charge control, monitoring, and protection for either 2-, 3-, 4-, or 5- – ESR measurement series super capacitors with individual capacitor – Operation status monitoring and balancing or up to 9-series capacitors – State-of-charge with only the stack voltage being measured. With a small footprint of 7.8 mm × 6.4 mm in a compact 24- – State-of-health pin TSSOP package, the BQ33100 maximizes – Charging voltage and current reports functionality and safety while dramatically increasing – Safety alerts with optional pin indication ease of use and cutting the solution cost and size for super capacitor applications. • Integrated protection monitoring and control – Overvoltage Device Information(1) – Short circuit PART NUMBER PACKAGE BODY SIZE (NOM) – Excessive temperature BQ33100 TSSOP (24) 7.80 mm × 4.40 mm – Excessive capacitor leakage (1) For all available packages, see the orderable addendum at • 2-wire SMBus serial communications the end of the data sheet. • High-accuracy 16-bit delta-sigma ADC with a 16- channel multiplexer for measurement – Used for voltage, current, and temperature • Low power consumption – < 660 µA in NORMAL operating mode – < 1 µA in SHUTDOWN mode • Wide operating temperature: –40°C to +85°C Simplified Schematic DC INPUT PWR System Load Main Pwr Rail Memory, CPU, etc... PWR bq24640 Supercap Charger SuperCap CHGLVL0,1 Pack CHG 2s...9s PWR PWR bq33100 Supercap Monitor V, I and T Measurements 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. BQ33100 SLUS987C –JANUARY 2011–REVISED DECEMBER 2019 www.ti.com Table of Contents 1 Features .................................................................. 1 7.19 Current Protection Thresholds .............................. 10 2 Applications ........................................................... 1 7.20 Current Protection Timing ..................................... 10 3 Description ............................................................. 1 7.21 Timing Requirements: SMBus .............................. 11 4 Revision History..................................................... 2 7.22 Typical Characteristics.......................................... 12 5 Description (Continued)........................................ 4 8 Detailed Description ............................................ 12 8.1 Overview ................................................................. 12 6 Pin Configuration and Functions ......................... 4 8.2 Functional Block Diagram ....................................... 14 7 Specifications......................................................... 5 8.3 Feature Description................................................. 14 7.1 Absolute Maximum Ratings ...................................... 5 8.4 Device Functional Modes........................................ 29 7.2 ESD Ratings.............................................................. 5 8.5 Programming........................................................... 30 7.3 Recommended Operating Conditions....................... 6 9 Application and Implementation ........................ 52 7.4 Thermal Information.................................................. 6 9.1 Application Information............................................ 52 7.5 Electrical Characteristics: General Purpose I/O........ 6 9.2 Typical Application ................................................. 53 7.6 Supply Current .......................................................... 7 7.7 REG27 LDO.............................................................. 7 10 Power Supply Recommendations ..................... 55 7.8 Coulomb Counter...................................................... 7 11 Layout................................................................... 55 7.9 ADC........................................................................... 7 11.1 Layout Guidelines ................................................. 55 7.10 External Capacitor Voltage Balance Drive.............. 8 11.2 Layout Example .................................................... 56 7.11 Capacitor Voltage Monitor ...................................... 8 12 Device and Documentation Support ................. 59 7.12 Internal Temperature Sensor .................................. 8 12.1 Documentation Support ....................................... 59 7.13 Thermistor Measurement Support .......................... 8 12.2 Support Resources ............................................... 59 7.14 Internal Thermal Shutdown..................................... 8 12.3 Trademarks ........................................................... 59 7.15 High-Frequency Oscillator....................................... 8 12.4 Electrostatic Discharge Caution............................ 59 7.16 Low-Frequency Oscillator ....................................... 9 12.5 Glossary ................................................................ 59 7.17 RAM Backup ........................................................... 9 13 Mechanical, Packaging, and Orderable 7.18 Flash ....................................................................... 9 Information ........................................................... 59 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (December 2015) to Revision C Page • Changed Recommended Operating Conditions .................................................................................................................... 6 • Changed OC Dsg ................................................................................................................................................................ 43 • Changed OC Dsg Time ....................................................................................................................................................... 44 • Changed SC Dsg Cfg .......................................................................................................................................................... 45 • Changed SC Chg Cfg .......................................................................................................................................................... 46 • Changed Initial 1st Capacitance .......................................................................................................................................... 47 • Changed Capacitance ......................................................................................................................................................... 47 • Changed Measurement Margin % ....................................................................................................................................... 50 • Changed Max Dsg Time ...................................................................................................................................................... 51 • Changed V Chg Nominal ..................................................................................................................................................... 51 • Changed V Chg A ................................................................................................................................................................ 51 • Changed V Chg B ................................................................................................................................................................ 51 • Changed V Chg Max ........................................................................................................................................................... 51 • Changed Min Voltage ........................................................................................................................................................... 51 • Changed Learning Frequency ............................................................................................................................................. 52 2 Submit Documentation Feedback Copyright © 2011–2019, Texas Instruments Incorporated Product Folder Links: BQ33100 BQ33100 www.ti.com SLUS987C –JANUARY 2011–REVISED DECEMBER 2019 Changes from Revision A (March 2011) to Revision B Page • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .................................................................................................. 1 • OperationStatus() register bit 9 change
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