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

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.

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* This is a standard-grade product.
For Automotive usage, please contact Sales.
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Product Detail

 
Part Number | BD28412MUV-E2
Status | Recommended
Package | VQFN032V5050
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes

Specifications:

Vcc(Min.)[V]

4.5

Vcc(Max.)[V]

13.0

Speaker Amp Outputs

2.0

Speaker Amp PSRR[dB]

55.0

Speaker Amp Input Type

Analog Signal

Speaker Amp Type

Class D

Speaker Amp Output Power(Max.)[W]

9

Operating Temperature (Min.)[°C]

-25

Operating Temperature (Max.)[°C]

85

Package Size [mm]

5x5 (t=1)

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

Evaluation
Board

 
    • Evaluation Board
    • BD28412MUV-EVK-001
    • 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.

  • User's Guide Purchase Inquiry

Design Resources

 

Documents

User's Guide

  • BD28412MUV Evaluation Board Information

Technical Articles

Schematic Design & Verification

  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Resistance

Tools

2D/3D/CAD

  • VQFN032V5050 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)