LY8261

Rev. 1.5

3.3W Stereo & FM Enhancement Class D Audio Power Amplifier

5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan

TEL: 886-3-6668838

FAX: 886-3-6668836

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FEATURES

3.3W/CH Into 4Ω from 5.5V power supply at

THD+N = 10%.

2.2V~5.5V Power supply.

Support FM enhancement function.

Support headphone function.

Support mute function.

Low shutdown Current.

Low Quiescent Current.

Short-Circuit Protection and automatic recovery.

Over-Heat Protection and automatic recovery.

Minimum external components.

No output filter required for inductive loads.

Low noise during turn-on and turn-off transitions.

Lead free and green package available.

(RoHS Compliant)

Package : 16 pin 150 mil SOP.

APPLICATION

Portable electronic devices

Mobile phones, PDAs

DVD/CD Players, TFT LCD TVs/Monitors

USB Audio, Audio System

iPod dock.

GENERAL DESCRIPTION

The LY8261 is a high efficiency, high quality 3.3W

stereo class D audio power amplifier which can

operate FM enhance function to get good

performance in FM mode. It is a low noise, filterless

PWM architecture eliminates the output filter,

reducing external component count, system cost

(BOM cost), and simplify design.

The device was designed to meet of Multimedia

application includes mini speaker and other portable

electronic devices.

The LY8261 is a single 5.5V power supply, it is

capable of driving 4Ω speaker load at a continuous

average output of 3.3W/CH with 10% THD+N.

The device also features an internal thermal

shutdown protection and output pin short circuit

( short to output pin, short to ground and short to

VDD ) protection prevent the device from damage

during fault conditions.

The LY8261 is easily to be used in various portable

applications and products. such as FM speaker,

MP3, MP4 and MP5 media players.

PIN CONFIGURATION

LY8261 SOP16 Pin Configuration (Top View)