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.

Part NumberStatusPackageUnit QuantityMinimum Package QuantityPacking TypeRoHS
BD28412MUV-E2Under DevelopmentVQFN032V505025002500TapingYes

BD28412MUV Data Sheet

Specifications
Vcc(Min.)[V]4.5
Vcc(Max.)[V]13.0
Speaker Amp Outputs2.0
Speaker Amp PSRR[dB]55.0
Speaker Amp Input TypeAnalog Signal
Speaker Amp TypeClass D
Speaker Amp Output Power(Max.)[W]9
Operating Temperature (Min.)[°C]-25
Operating Temperature (Max.)[°C]85
Technical Documents
Features
  • 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
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Application Note BA12004BF
Part Explanation BA12004BF