Product details


Cell chemistry SuperCap Number of series cells 2-4 Cells, >4 Cells Communication interface I2C, SMBus Battery capacity (Min) (mAh) 0 Battery capacity (Max) (mAh) 65534 Implementation Pack External capacity indication None Features Operating temperature range (C) -40 to 85 Cell balancing External open-in-new Find other Battery fuel gauges

Package | Pins | Size

TSSOP (PW) 24 34 mm² 7.7 x 4.4 open-in-new Find other Battery fuel gauges


  • Fully integrated 2-, 3-, 4-, and 5-series Super Capacitor Manager
  • Can be used with up to 9-series capacitors without individual integrated capacitor monitoring and balancing
  • Active capacitor voltage balancing
    • Prevents super capacitor overvoltage during charging
  • Capacitor health monitoring
    • Capacitance learning
    • ESR measurement
    • Operation status
    • State-of-charge
    • State-of-health
    • Charging voltage and current reports
    • Safety alerts with optional pin indication
  • Integrated protection monitoring and control
    • Overvoltage
    • Short circuit
    • Excessive temperature
    • Excessive capacitor leakage
  • 2-wire SMBus serial communications
  • 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

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The Texas Instruments BQ33100 Super Capacitor Manager is a fully integrated, single-chip solution that provides a rich array of features for charge control, monitoring, and protection for either 2-, 3-, 4-, or 5-series super capacitors with individual capacitor monitoring and balancing or up to 9-series capacitors with only the stack voltage being measured. With a small footprint of 7.8 mm × 6.4 mm in a compact 24-pin TSSOP package, the BQ33100 maximizes functionality and safety while dramatically increasing ease of use and cutting the solution cost and size for super capacitor applications.

Using its integrated high-performance analog peripherals, the BQ33100 battery manager measures and maintains an accurate record of available capacitance, state-of-health, voltage, current, temperature, and other critical parameters in super capacitors, and reports the information to the system host controller over a 2-wire SMBus 1.1 compatible interface.

The BQ33100 provides firmware-controlled protection on overvoltage, overtemperature, and overcharge, along with hardware-controlled protection for overcurrent in discharge and short circuit protection during charge and discharge.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet BQ33100 Super Capacitor Manager datasheet (Rev. C) Nov. 20, 2019
Application note Design Example Charge 3 Super Capacitors in Series with Health Monitoring Apr. 08, 2020
Technical articles Supercapacitors-the solution for back-up power Jul. 17, 2015
Application note bq33100 Top Thirteen Design Considerations Jul. 08, 2015
Application note Calibration and Data Flash Programming the bq33100 Supercapacitor Manager Apr. 27, 2012
User guide bq33100 Super Capacitor Pack Manager EVM Mar. 01, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development


The BQ33100EVM-001 evaluation module (EVM) is a complete evaluation system for the bq33100 super capacitor manager. The EVM includes one bq33100 circuit module. An EV2400 PC interface board for gas gauge interface and a PC USB cable are required for communication with a PC and can be ordered online (...)

  • Complete evaluation system for the bq33100 SBS 1.1-compliant super capacitor management IC
  • Populated circuit module for quick setup
  • PC software and interface board for easy evaluation
  • Software that allows data logging for system analysis

Software development

SLUC250A.ZIP (43 KB)
SLUC249C.ZIP (7074 KB)

Reference designs

Supercapacitor Manager Reference Design
TIDA-00258 The Supercapacitor Manager is a fully integrated, single-chip, solution that provides a rich array of features for managing, charge control, monitoring, and protection, for either 2, 3, 4 or 5 series Supercapacitors with individual capacitor monitoring and balancing or up to 9 series capacitors with (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options

Ordering & quality

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Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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