Datasheet > BD28412MUV-E2

BD28412MUV-E2

更新时间： 2024-11-05 01:21:03

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
44页	1562K
描述
9W9W Analog Input Class D Speaker Amplifier

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BD28412MUV-E2 数据手册

Datasheet

Low Power Consumption Class D Amplifier

9W+9W Analog Input

Class D Speaker Amplifier

BD28412MUV

General Description

Key Specifications

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.



Supply Voltage Range:

Speaker Output Power:

4.5V to 13V

9W+9W (Typ)

(V_CC=12V, R_L=8Ω, PLIMIT=0V)

18W (Typ)

(V_CC=12V, R_L=4Ω, PLIMIT=0V)



Speaker Output Power(PBTL):

Total Harmonic Distortion Ratio:

0.03% (Typ) @Po=1W

(V_CC=11V, R_L=8Ω, PLIMIT=0V)

100dB (Typ)



Crosstalk:

PSRR:

Output Noise Voltage:

Standby Current:

Operating Current:

55dB (Typ)

-80dBV (Typ)

0.1µA (Typ)

16mA (Typ)

Features

(No load or filter, No signal)



Analog Differential Input

Low Standby Current



Operating Temperature Range:

-25°C to +85°C

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 (V_CC=4.5V to 13V)

High Efficiency and Low-heat-generation Make

the System Smaller, Thinner, and More

Power-saving

Package

VQFN032V5050

W(Typ) x D(Typ) x H(Max)

5.00mm x 5.00mm x 1.00mm



VQFN032V5050



Pop Noise Prevention During Power Supply

ON/OFF

High Reliability Design by Built-in Protection

Circuits

Typical Application Circuit

- Overheat Protection

- Under Voltage Protection

- Output Short Protection

- Output DC Voltage Protection

Small Package (VQFN032V5050) Achieves Mount

Area Reduction



Applications



Wireless Speakers, Small Active Speakers,

Portable Audio Equipments, etc.

Figure 1. Typical Application Circuit

〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

www.rohm.com

TSZ22111 • 14 • 001

TSZ02201-0C1C0E900620-1-2

21.Sep.2016 Rev.003

1/40

12 3 4 5 6 7...44

中文翻译

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