Smartwatch / fitness tracker

We are seeing the number of smartwatches and fitness trackers slowly but surely increase. Packed with a growing range of sensors, these devices are effectively merging into a single wrist worn wearable. However as more and more functionality is squeezed into an already small footprint, using the right power efficiency and space-saving packages is vital.

Block diagram

Highlighted components are Nexperia focus products

Design considerations

  • Need to balance extremely long battery lifetimes with always on functionality - energy efficiency extremely important
  • Low power dissipation is crucial in such small wearable devices
  • Need for very small packages or wafer-level chip scale footprints
  • For more power efficient wired charging, the inline Schottky diode can be replaced by two back-to-back MOSFETs

Minimize space, maximize efficiency

The smartphone has become crucial to our daily lives, connecting us to the ‘cloud’ as well as a host of peripherals - from smartwatches and earbuds to smart speakers and mixed reality headsets. As a long-term partner to the mobile phone industry, our proven portfolio helps your designs meet even the most challenging footprint constraints.

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