红水杯

[New Beggar among Beggars] AC6905A Lossless MP3 Decoding Module

Overview

The peripherals are all packaged in 0603, with only the most basic button control circuit and TF card reading headphone output circuit. The Bluetooth, FM. AUX functions are removed, and a lithium battery with a protective board needs to be connected. The working condition is around 3V-5.5V. , with a holder with a MICROB-free charging IC, so an external lithium battery charging module is needed. Of course, you can also weld the reserved buck diode to achieve a 5V step-down charging of about 4.2V. If there is an external For the charging module, just solder the reserved 0 ohm resistor. The switch controls the connection between the battery and the IC, which means you can listen to music while charging. The module can also be slightly wider and get a TP4056 charging IC. ...Friends can refer to and modify it by themselves. My layout idea is not very clear. Of course, there are better layouts that can replace mine. Thank you.

Since the upgraded version of this module has been released, this module will not be tested (the upgraded version comes with a lithium battery charging circuit, this one does not, this is the only difference between the two), the upgraded version link: https://oshwhub.com/Qmery_ELEproject_HDHN/LF411 -MP6905HD

Design Files

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Update:2024-11-21 13:15:34

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