Table of Contents
A multimedia player based on the Jieli JL AC6955F development, supporting Bluetooth 5.1 and SD card playback. Include lithium battery charging IC (TP4054) and Type-C interface for power supply.
Schematic JL AC6955F Bluetooth 5.1 audio module + SD card + tp4054 battery charger
JL AC6955F is Jieli new generation Bluetooth speaker chip, with the following features:
- Supports Bluetooth 5.1, supports Bluetooth dual mode (classic Bluetooth+EDR+Bluetooth Low Energy);
- Supports multiple audio formats, including MP3, wav, flac, and ape lossless decoding;
- Supports serial AT command control;
- Multi-functionality, supports Bluetooth audio, card music reading, and other modes.
This player has verified the Bluetooth and TF card audio playback functions and performs well.
The detailed parameters of the design are as follows:
- There are 4 function buttons on the right side of the board for function switching, song switching, and play/pause functions;
- Uses a Type-C interface for power supply to the player;
- On-board lithium battery charging IC (TP4054), supports battery power supply (recommended battery capacity of 400mAh);
- Added a power switch to completely cut off battery power when not in use, extending battery life;
- Reserved a serial port for debugging, controlling the AC6955F through AT commands.
About Jieli AC6955F Bluetooth chip
Jieli AC6955F is a Bluetooth chip commonly used in various electronic devices. It is known for its reliable performance and low-power consumption. The chip supports Bluetooth 5.0 technology, allowing for stable and efficient wireless connectivity. It is often used in audio devices such as headphones, speakers, and earbuds, providing a seamless and high-quality audio experience. The Jieli AC6955F chip also offers features like noise cancellation and compatibility with different audio codecs. Overall, it is a popular choice for manufacturers looking to incorporate Bluetooth functionality into their products.
About IC TP4054
The IC TP4054 is a specialized integrated circuit that is commonly used in battery charging applications. It is particularly designed for single-cell lithium-ion or lithium-polymer batteries. The IC TP4054 offers a highly efficient and compact solution for charging these types of batteries, as it integrates various functions and features into a single chip. It includes a programmable constant current (CC) and constant voltage (CV) charging algorithm, which ensures safe and optimal charging of the battery. The IC TP4054 also incorporates built-in safety features such as overcharge protection, over-discharge protection, and thermal regulation, which help prevent potential damage to the battery. Additionally, its small footprint and low power consumption make it suitable for a wide range of portable electronic devices, including smartphones, tablets, and wearable devices. Overall, the IC TP4054 is a reliable and convenient charging solution that effectively manages lithium-ion or lithium-polymer batteries, ensuring their longevity and optimal performance.
Bom AC6955F Bluetooth 5.1 audio module + SD card playback + battery charger
| Quantity | Designator | Description | Value |
| Resistors | |||
| 3 | R1, R5, R8 | 0402 | 1K |
| 3 | R2, R6, R12 | 0402 | 0 |
| 1 | R3 | 0402 | 3.3k |
| 1 | R4 | 0402 | 6.8k |
| 1 | R7 | 0402 | 9.1k |
| 1 | R9 | 0402 | 15k |
| 1 | R10 | 0402 | 24k |
| 1 | R11 | 0402 | 22k |
| Capacitors | |||
| 1 | C1 | 0402 | 2.7pF |
| 7 | C2,C3,C4,C5,C6,C7,C8 | 0402 | 1uF |
| 2 | C9,C10 | CASE-B-3528 Tantalum Capacitors | 100uF/6.5V |
| Semiconductors | |||
| 1 | D1 | 40V Schottky Barrier Diodes (SBD) | 1N5819WS S4 – SOD-323 |
| 2 | LED1,LED2 | 0603 | Red Led |
| 1 | U1 | JIELI qsop24 32 bits DSP Bluetooth | AC6955F |
| 1 | U2 | SOT-23-5 Battery Management | TP4054-42-SOT25R |
| Miscellaneous | |||
| 1 | USB1 | Type-C SMD USB Connectors 16 pin | TYPE-C 16PIN 2MD (073) |
| 1 | CARD1 | SMD SD Card Connectors | TF-01A |
| 1 | F1 | 6V 0.5A 40A 1A 0603 Resettable Fuses | JK-SMD0603-050-6 |
| 4 | SW1,SW2,SW4,SW5 | KEY-SMD_TX-1010-X-X | SMD Tactile Switches |
| 1 | SW3 | SMD Slide Switches | SK-3296S-01-L1 |
| 1 | H1 | Pin Headers | 2.54_1×4P |
| 1 | J1 | headphone jack | PJ-3420-A-SMT |
| 1 | X1 | M49SMD Crystal | 24MHz |
Download files, links, and notes for AC6955F Bluetooth 5.1 audio module + SD card playback
Download PCB in Gerber and PDF
Source: https://oshwhub.com/xyzdiy/ac6955_bluetooth_audio
