9W+9W Analog Input Class D Speaker Amplifier - BD28412MUV

BD28412MUV is a 9W+9W stereo (or 18W monaural) class D amplifier, developed for battery equipped speaker systems such as wireless speakers. This IC is incorporated with a precise oscillator to generate multiple switching frequencies that can avoid the AM radio interference. In addition, 2.1Ch audio system can be realized by master and slave operation without beat noise caused by interference between two ICs. Furthermore, this IC achieves lower power consumption that eliminates the need for an external heat sink.

* This is a standard-grade product.
For Automotive usage, please contact Sales.
Part Number | BD28412MUV-E2
Status | Recommended
Package | VQFN032V5050
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes






Speaker Amp Outputs


Speaker Amp PSRR[dB]


Speaker Amp Input Type

Analog Signal

Speaker Amp Type

Class D

Speaker Amp Output Power(Max.)[W]


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]



  • Analog Differential Input
  • Low Standby Current
  • Output Feedback Circuitry Prevents Sound Quality Degradation Caused by Power Supply Voltage Fluctuation, Achieves Low Noise and Low Distortion, Eliminates the Need of Large Electrolytic-Capacitors for Decoupling
  • Power Limit Function (Linearly-programmable)
  • Selectable Switching Frequency
    (AM Avoidance Function)
  • Synchronization Control is Supported
    (Selectable Master and Slave Operation)
  • Parallel BTL (PBTL) is Supported
  • Wide Voltage Range (VCC=4.5V to 13V)
  • High Efficiency and Low-heat-generation Make the System Smaller, Thinner, and More Power-saving
  • Pop Noise Prevention During Power Supply ON/OFF
  • High Reliability Design by Built-in Protection Circuits
    • Overheat Protection
    • Under Voltage Protection
    • Output Short Protection
    • Output DC Voltage Protection
  • Small Package (VQFN032V5050) Achieves Mount Area Reduction