BD28412MUV
9W+9W類比輸入立體聲D類喇叭放大器

本IC不使用散熱片，是可通過立體聲BTL進行9W+9W輸出或通過單聲道PBTL進行18W輸出的立體聲D類喇叭放大器。內建高精度振盪器，為避免與AM無線電干擾，可選擇多個開關頻率。此外，可選擇主/從模式，因此無需在意差拍雜訊，即可實現使用2個IC的2.1Ch音響系統。實現了小輸出時的低功耗，是最適於無線喇叭等搭載電池的喇叭系統的立體聲D類喇叭放大器。

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* 本產品是標準級的產品。
本產品不建議使用的車載設備。
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Product Detail

 
料號 | BD28412MUV-E2
狀態 | 推薦品
封裝 | VQFN032V5050
單位數量 | 2500
最小包裝數量 | 2500
包裝形式 | Taping
RoHS | Yes

規格:

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)

功能:

  • 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.

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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
  • Basics of Thermal Resistance and Heat Dissipation
  • 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)