TDA7388 Audio Power Amplifier Board 4 Channel 41W 12VDC

TDA7388 Audio Power Amplifier Board 4 Channel 41W 12VDC

Features:

• 4-Channel Output Supports quad-channel audio output for full-range stereo sound in automotive and DIY audio systems.
• High Power Output Delivers up to 41W per channel (total 4 x 41W) for robust and clear sound performance.
• Wide Voltage Range Operates efficiently within a 12V to 14.5VDC input range, ideal for car audio setups.
• Based on TDA7388 IC Utilizes the TDA7388 integrated amplifier chip known for high fidelity and low distortion.
• Thermal and Short Circuit Protection Built-in protections ensure safety and reliability under various operating conditions.
• Compact PCB Design Designed to fit in tight enclosures, making it suitable for custom and embedded installations.
• Easy Installation pin headers allow for easy connection to speakers and power supply.
• Low Distortion and Noise Ensures clean audio output with minimal interference or signal degradation.
• Versatile Use Ideal for car audio upgrades, multimedia speaker systems, and other DIY audio amplification projects.

Pin Configuration:

Standard test and application circuit:

• St-By OUT Threshold Voltage -(Amp: ON) 3.5 V.
• St-By IN Threshold Voltage- (Amp: OFF) 1.5 V.
• Mute OUT Threshold Voltage -(Amp: Play) 3.5 V.
• Mute IN Threshold Voltage- (Amp: Mute) 1.5 V

Specifications:

• Product Type: Audio Power Amplifier Board
• Amplifier IC: TDA7388
• Number of Channels: 4 Channel (Quad-Channel)
• Output Power: High output power capability
  • 4 x 45 W / 4Ω max.
  • 4 x 26 W / 4Ω @ 14.4 V, 1 kHz, 10 %
• Operating Voltage: 12V to 14.5VDC
• Output Load Impedance: 4Ω to 8Ω
• Total Harmonic Distortion (THD): ≤ 0.02% @ 1W, 1kHz
• Voltage Gain(Max.): 27 dB
• Input Impedance: 100 kΩ
• Protection Features:
  • Over-temperature protection
  • Short-circuit protection
  • Output DC offset detection
  • Load dump protection
• Board Dimensions(L × W × H): 44mm x 37mm x 21mm
• Mounting Type: PCB mount with header pins

NOTE: HEATSINK SHOULD BE PURCHASED SEPARATELY OR THE DEVICE WILL OVERHEAT.

Heatsink Selection Guide

Again, a heatsink is required for the TDA7388 Audio Power Amplifier Board since this IC dissipates significant heat during operation, and proper cooling prevents thermal limiting, distortion, and long-term damage. We provide this guide for you to choose a suitable size for your heatsink based on your needs and use cases:

• Light use (testing, low volume, short sessions): small aluminium heatsink of Approx. size 60 × 30–40 × 15–20 mm
• Recommended use (typical home or car audio, moderate continuous power): medium extruded aluminium heatsink with fins of Approx. size 100 × 35–40 × 25–35 mm
• Heavy use (high volume, long operation, poor airflow, 4Ω speakers): large finned aluminium heatsink of Approx. size 150–200 × 50–60 × 40–60 mm or larger. Consider adding a fan.

Installation tips:

• Always use a thermal pad or thermal paste between the IC and the heatsink.
• Ensure full contact with the amplifier’s metal tab or PCB heat pad.
• If the board is enclosed, choose a larger heatsink or provide ventilation.

Note: The TDA7388 includes thermal protection, but it should not be relied on as a substitute for a proper heatsink. You can look at our available heatsinks here.

Applications:

• Car Audio Systems.
• DIY Audio Projects.
• Multimedia Speaker Systems
• Home Theater Audio.
• Bluetooth Audio Systems.
• Public Announcement Systems.
• Educational Projects.
• Portable Speaker Boxes.

Package Contents:

• 1 X  TDA7388 Audio Power Amplifier Board 4 Channel 41W 12VDC

NOTE: Heatsink is not included! You can look at available ones here.

Datasheet:

• TDA7388