Page Comparison

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1. Surface Mount Non Addressable

2. Handle up to 12V5V

3. TBD

https://docs.google.com/spreadsheets/d/1rQ15cULHvpWA7JbSKxMaMTKfRuIcg4_okoWHp6thIQM/edit?usp=sharing

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• https://www.digikey.ca/en/products/detail/semtech-corporation/SC338AIMSTRT/969447?s=N4IgjCBcpgTA7FUBjKAzAhgGwM4FMAaEAeygG0RYAWATiqoA4QBdIgBwBcoQBlDgJwCWAOwDmIAL5EAtAFYkIVJEy5CJcpRYTtQA 

• https://ww1.microchip.com/downloads/en/DeviceDoc/mic5159.pdf 

• https://www.digikey.ca/en/products/detail/texas-instruments/LFC789D25CDR/668547 

NOT USED: Diode Options: 

• https://www.digikey.ca/en/products/detail/diodes-incorporated/S1BB-13-F/814403

• https://www.digikey.ca/en/products/detail/diodes-incorporated/S1B-13-F/725026

• https://www.digikey.ca/en/products/detail/vishay-general-semiconductor-diodes-division/B140-E3-61T/2149673

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• LED Strip

  • https://www.digikey.ca/en/products/detail/inspired-led-llc/12V-SB-RGB-5M/9091794 

  • Features: RGB, Surface Mount, 12V Forward Voltage

• LEDS

  • https://www.digikey.ca/en/products/detail/kingbright/adafruitAPL3015QBC-industriesD-llc/4492/11569136?utm_adgroup=General&utm_source=google&utm_medium=cpc&utm_campaign=Smart Shopping_Product_Zombie SKUS&utm_term=&productid=11569136&gclid=Cj0KCQiAybaRBhDtARIsAIEG3km2SuIrJsH1AKEORmMeJByITyMUmQ5sjySpcJPjcA6iFdzk3gMyoVwaArjfEALw_wcBF01/2263570

  • Features: RGB, Discrete, VDD Range (+3.3V ~ +5.5V)

• NOT USED: Voltage Regulator

  • https://www.digikey.ca/en/products/detail/texas-instruments/LFC789D25CDR/668547 668536

  • Features: VIN (9V ~16V), 2 outputs

• Resistors (Note: out of stock)

  • https://www.digikey.ca/en/products/detail/yageo/RT0603BRC07500RL/7708292?ColumnSort=0&FV=-8|52&page=1&pageSize=25&pv2085=u900 Ohms&pv3=1131&s=N4IgjCBcoEwAwA4CsVQGMoDMCGAbAzgKYA0IA9lANohJxwAEA8gBYC2%2BIAuqQA4AuUEAFUAdgEs%2BjTAFlC2fAFcAToRABfUgFoI0EBkg4CJclXABmLmo0gYplfjH4%2BZJR1JdSKXTyhhePyBgkKyA&sf=0&sv=0Features: 500 stackpole-electronics-inc/CSR0603JKR100/6270656

  • Features: 100 Ohm Resistors, Tolerance 0.1%5%

Calculations:

• Resistors:

  • Power Supply Voltage Range: +3.7 V ~ +5.5 V5V

    Forward Voltage: 12V3.3V

    Desired LED Current: 10mA to 15mA

    Resistance= (Power Supply V - LED VForward Voltage)/Desired LED Current

    • Maximum Resistance:

      (12R=(5V-3.73V)/0.010=830 ohms rounded to 900 ohms

      Minimum Resistance:

      (12-5.5)/0.015= 433.3 ohms rounded to 500 ohms(15mA)=113.34 Ohms

    • With 100 Ohm Resistor: I=(5V-3.3V)/100= 17mA Max mA=20mA
      

Job File (With Screenshots)

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PCB (2D):

Top Layer:

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Bottom Layer:

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PCB (3D):

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Gerber File Preview:

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Timeline:

• March 13 2022, researching components needed for the led strip

• March 15 2022, agreed to use option 2, calculated LED resistance and found smd resistors. Finalized part selection for the project, awaiting response from EE Leads.

• March 19 2022, had meeting with EE team lead and finalized schematic

• March 20 2022, small revisions and generated gerber files for production