Overview

The LA4663 is a BTL 2-channel power amplifier IC that was developed for ease of use in general audio applications. In addition to providing improvements in a wide range of electrical characteristics, the LA4663 aims for improved listenability and an excellent cost performance ratio.

特性 Features

? Wide operating supply voltage range (VCCop): 5.5 to

22 V (Certain conditions may apply.)

? High ripple rejection ratio: 60 dB (typical)

? Power: 16 W × 2 (VCC = 15 V/6?),

13 W × 2 (VCC = 12 V/4?), 6.5 W × 2 (VCC = 9 V/4?)

? Built-in signal muting circuit (AC muting) reduces the

number of external components and provides muting

with minimal switching noise.

? Startup circuit with a start time of 0.6 to 0.7 seconds.

The LA4663 provides distortion-free startup, since

output is only generated after the supply voltage reaches

the midpoint at power on.

(The startup time can be modified in end products by

using this circuit in conjunction with the muting circuit

described above.)

? Full complement of built-in protection circuits

(protection from shorting to ground, shorting to VCC,

load shorting, and overheating)

? High audio quality, minimal impulse noise

Applications

Radio/cassette players with built-in CD/MD players,

microcomponent stereo systems, active speakers,

electronic musical instruments, and other audio devices.