Nexperia
  • Products
    Bipolar transistors
    • Special feature transistors
    • 3-terminal adjustable shunt regulators
    • General purpose and low VCEsat bipolar transistors
    • LED driver / Constant current source
    • Resistor Equipped Transistors (RETs)
    Diodes
    • Automotive diodes
    • Zener diodes
    • Switching diodes
    • Schottky diodes and rectifiers
    • Recovery rectifiers
    • Silicon Germanium (SiGe) rectifiers
    ESD protection, TVS, signal conditioning
    • Automotive ESD protection and TVS
    • ESD protection
    • EMI solutions with integrated protection
    • Transient Voltage Suppressors (TVS)
    MOSFETs
    • Small signal MOSFETs
    • Power MOSFETs
    • Automotive MOSFETs
    • Application Specific MOSFETs
    GaN FETs
    Analog & Logic ICs
    • Automotive logic
    • Analog
    • Asynchronous interface logic
    • I/O expansion logic
    • Synchronous interface logic
    • Control logic
    Automotive
    • Automotive bipolar transistors
    • Automotive diodes
    • Automotive ESD protection and TVS
    • Automotive MOSFETs
    • Automotive logic
  • Applications
    Automotive
    • ADAS radar sensor module
    • Airbag controller with Safing MOSFET
    • Anti-locking braking systems
    • Automatic HVAC - BLDC blower motor
    • Cooling Fan
    • Electronic Fuel Injection
    • Electronic Power Steering
    • Adaptive Front LED lights
    • In-Vehicle Network (CAN / LIN / FlexRay) protection
    • Multimedia / infotainment bus protection
    • LED backlight for touch screens and cameras
    • Constant current source for interior LED lighting
    • High power, high efficiency DC/DC converter
    • Step-down DC/DC converter
    Mobile and Wearables
    • AR / VR glasses
    • Earbuds
    • GPS tracker
    • Smartwatch / fitness tracker
    • Smartphone
    • USB-Type-C AC/DC Wall Charger
    • Wired and wireless fast charging
    Industrial and Power
    • 12–48 V power tools and cordless equipment
    • 48/12 V DC/DC conversion (Telecoms / Server)
    • 5G marco / micro-cell power supplies
    • 80 PLUS Titanium Industrial PSU (GaN-based)
    • AC EV wallbox / Bidirectional DC wallbox
    • Electric forklift truck
    • Factory Automation and Industry 4.0
    • Fluid Pump Control
    • Hot swap for communications infrastructure
    • HVAC (Air conditioning)
    • Industrial Power Supply Units (PSUs)
    • Intelligent outdoor street lighting
    • Photovoltaic (PV) single-phase string inverter
    • Power Sourcing Equipment / Power over Ethernet
    • Smart electricity e-meter
    Computing and Consumer
    • E-Bike
    • High performance computing / Server
    • Hot swap for blade server
    • Medical diagnostics and therapy
    • Smoke / Fire detector
    • Solid-state drive (SSD)
    • Unmanned aerial vehicles (UAVs)
    Sub-systems
    • Antenna protection (NFC / Bluetooth)
    • Constant current source
    • ESD protection for USB Type-C connections
    • I2C voltage translation
    • Shift register based LED driver
    • Solenoid driver
    • USB4 connectivity and compatibility 
    • DC/DC conversion for MCU core supply
    • Battery-powered motor control drive (25-100 V)
    • Asynchronous step-down DC/DC
    • Synchronous step-down DC/DC
    Reference designs
    • H-bridge motor controller power supply circuit
    • Broadcom GAN039-650NBB half bridge evaluation board
    • USB Type-C ESD protection evaluation
    Application notes
    Interactive application notes
    • Tutorial
    • IAN50001 - Reverse battery protection in automotive applications
    • IAN50002 - LED side light SEPIC DC-to-DC converter
    • IAN50003 - Driving solenoids in automotive applications
    • IAN50004 - Using power MOSFETs in DC motor control applications
    • IAN50005 - Paralleling power MOSFETs in high power applications
    • IAN50006 - Power MOSFETs in linear mode
    • IAN50007 - Conducted battery line transients
    • IAN50009 - Power MOSFET applications in automotive BLDC and PMSM drives
    • IAN50016 - MOSFETs for airbag applications
  • Quality
  • Support
  • Shop
  • Careers
  • News
  • About
  • Blogs
  • Shopping cart
  • Hello,
    • Distributor Portal
    • My Nexperia
    • My account
    • Logout
  • My Nexperia
  • English
  • 中文
Search
  • Search
  • Cross reference
  • Parametric search
Or cross multiple parts
  1. Home
  2. Applications
  3. Mobile and Wearables
  4. Smartwatch / fitness tracker
Preference settings under My Nexperia

You can change your Change Notification (CN) preferences in My Nexperia. These preferences set your CN view in My Nexperia and the CN emails.

By default you will see all Change Notifications that are available to you.

Change preferences
×

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.

  • Overview

Block diagram

Highlighted components are Nexperia focus products

Products

  • Loadswitches: MOSFET, 12-20 V, DNF2020 / DFN10xx / WLCSP
  • Battery FET: 12-20 V, P-channel, DFN2020 / WL-CSP
  • Boost FET: 12-20 V, N-channel, DFN2020 / WL-CSP
  • ESD: Antenna protection
  • ESD TVS diodes: Mobile, DSN1608-2
  • Analog switch: LV/LVC family
  • Control logic: X2SON packages
  • Schottky rectifiers: ≥ 200 mA, DSN0603 / DSN1006
  • Control FETs / low current load switches - DFN0606

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.

Read more

 

 

Industry leading protection for USB Type-C

Nexperia’s new ESD protection series for USB Type-C deliver industry’s highest surge robustness and lowest trigger voltage

 

Read more...

Let us help you with product and design questions

Contact our technical support desk for yout technical questions.

Get technical support

Efficiency wins

Products

  • Bipolar transistors
  • Diodes
  • ESD protection, TVS, signal conditioning
  • MOSFETs
  • GaN FETs
  • Analog & Logic ICs
  • Automotive

Tools & Support

  • Packages
  • Quality portal
  • Request IMDS upload
  • Documentation center
  • Technical support

About Nexperia

  • Distributor locations
  • Careers
  • Contact
  • Monthly newsletter
  • Privacy Policy
  • Terms of use
  • Terms & Conditions
  • 粤ICP备17077980
  • Contact us

Ever used a chatbot for any questions? I’m called Nano. Why don’t you give it a try?

Nexperia Chatbot

Cart

This product was successfully added to your cart

Something went wrong, please try again later.

You have %% in your shopping cart.

Order more products
Checkout as guest
Checkout as My Nexperia user