2*15W +30W 8ohm class D blue-tooth Amplifier board

1. Introduce
SL-BD26 provide high-performance, thermally efficient amplifier solutions. it delivers 2x15W into 8Ω loads.
it operate from a single 8V to 18V supply and provide a high 67dB PSRR, eliminating the need for a regulated power supply. They offer up to 90% efficiency from a 12V supply.
Both devices feature eight-digitally-controlled gain settings.

2. Application
·LCD Monitors
·LCD/PDP Televisions
·MP3 Docking Stations
·Notebook PCs
3. Feature
A. Amplifier
· Output Power: Maximum 2*15W +30W at RL=8Ω,VCC=18V
· Power efficiency is up to 90%
· Low Working Voltage Down To 8V, High Working Voltage up To 18V
· Thermal Protection function
· Output Pin Short-Circuit Protection
· Separate VCC & PVCC
· Class-D stereo audio design
· Components use SMT decal, the board dimension is very small
· IC decal is 36-TQFN
· No external heat-sink, Less heat, save heat sink cost
· The current is very small
· Mute function
· The PCB design provides both bead and LC solutions
· Support Potentiometer volume control
· Support Bass voltage control
B.Bluetooth
· Bluetooth module is a Max.4dBm( Class2 ) module.
· compliant with the Bluetooth V2.1 protocol.
· 16bit stereo DAC with Headphone Amplifier.
· Support the Bluetooth protocol framework: HANDS-FREE PROFILE (HFP:HF); ADVANCED AUDIO DISTRIBUTION PROFILE(A2DP:SNK); AUDIO/VIDEO REMOTE ConTROL PROFILE(AVRCP:CT);
· Support the SBC decoding, support for stereo output with 16KHz/32KHz/44.1KHz/48KHz sample rate
· Support the mobile music player switching songs, playing or pausing music
· Support the echo cancellation and noise suppression
· Support active connections and simple pairing
C.Other function
· Support SD/TF card function.
· Support 4 keys function: play/pause, next, previous, mode.
· Support recharge power function, the charge voltage is 15V
· Bluetooth LED, SD card LED, charge LED
· The dimension is only 113mm*75mm