SDAA013 September   2025 BQ25190

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Schematic Design Guide
    1. 2.1 BQ25190 Schematic
  6. 3Layout Design Guide
  7. 4PCB Layer Plots
  8. 5Summary
  9. 6References

Abstract

This application note demonstrates the compact power and charging implementation provided by the BQ25190 linear battery charger. The BQ25190 is an excellent choice for wearables, medical devices, smart trackers, and other space-constrained applications. The BQ25190 simplifies complex power tree solution sizes by integrating multiple power rails along with a battery charger, an ADC, a sequencer, and a GPIO expander all in a compact 2.25mm x 2.75mm WCSP package. For applications where PCBA space is a premium, further design accommodations can be made to minimize the total solution size for the BQ25190.

The BQ25190 solution size, including passive components, can be reduced to a 30mm2 area when optimized for size. This involves component selection, schematic design, layout decisions, and application considerations.

BQ25190 Small Form Factor Board Figure 1-1 BQ25190 Small Form Factor Board