SLUAAH5 November   2022 BQ25171-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1 Introduction
  4. 2 Li-Ion Overview
  5. 3 Li-Ion Applications
  6. 4 LiFePO4 Overview
  7. 5 LiFePO4 Applications
  8. 6 NiMH Overview
  9. 7 NiMH Applications
  10. 8 Super Capacitors
  11. 9 Super Capacitor Applications
  12. 10Summary
  13. 11References

9 Super Capacitor Applications

Super capacitors are usually used in applications where last second functionality is required when the main power is lost. For example, sending data over communication modules in data concentrator applications. Other applications such as barcode scanner which requires quick charge and discharge when cashier removes the scanner from the cradle for checking out a customer is also a good fit for super capacitors.

The BQ25173 is a simple to use linear charger for super capacitors that can charge 1-4 cell super capacitors in series from 0 V at charging currents up to 800 mA. The BQ24640, on the other hand, is a switching charger controller that can charge 1 to 8 S supercap with up to 10 A charging current.