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vault backup: 2026-07-01 16:27:02

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ben committed 2026-07-01 16:27:02 -07:00
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PCB Design/Music Player/Process.md
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@@ -38,6 +38,8 @@ Since 3.6V are needed the values of 180K and 1.1M will be used for the feedback
| 3.3 V | 1.1 M$\Omega$ | 180 k$\Omega$ | | 3.3 V | 1.1 M$\Omega$ | 180 k$\Omega$ |
### Layout Considerations ### Layout Considerations
Figure 31 in section 10.2 of the datasheet should be used as an example layout for the regulator Figure 31 in section 10.2 of the datasheet should be used as an example layout for the regulator
It may not be entirely necessary to have this component since the battery charger should keep the output system voltage above a flor of 3.5V, but just in case I will keep it in case something
## PCM5102A ## PCM5102A
## LCD Selection ## LCD Selection
Initially I was planning to use the [NHD-2.4-240320DA-CTXN](https://www.digikey.com/en/products/detail/newhaven-display-intl/NHD-2-4-240320DA-CTXN/26743729) but I found that it requires 9.0V to drive the back light. Since I am driving this off of a single cell lipo I didn't want to add the additional complexity of another boost converter to get to 9.0V. I was able to find [another very similar display](https://www.digikey.com/en/products/detail/newhaven-display-intl/NHD-2-4-240320AF-CSXP/22204988) that instead uses 3.0V (up to 3.3V) to power the back light. Initially I was planning to use the [NHD-2.4-240320DA-CTXN](https://www.digikey.com/en/products/detail/newhaven-display-intl/NHD-2-4-240320DA-CTXN/26743729) but I found that it requires 9.0V to drive the back light. Since I am driving this off of a single cell lipo I didn't want to add the additional complexity of another boost converter to get to 9.0V. I was able to find [another very similar display](https://www.digikey.com/en/products/detail/newhaven-display-intl/NHD-2-4-240320AF-CSXP/22204988) that instead uses 3.0V (up to 3.3V) to power the back light.