Overview

The LA4805V is a power IC developed for use in stereo headphones. It includes low frequency enhancement, beep function and output control circuits on-chip. Furthermore, the LA4805V realizes a high S/N ratio, a high ripple exclusion ratio, and low current drain.

Features

• Low current drain (8.3 mA typical)

• High S/N ratio (90 dB typical, 13 µV)

• High ripple exclusion ratio (75 dB typical)

• No output electrolytic capacitors required

• Ultra-miniature package (SSOP-30)

Functions

• Stereo headphone power amplifier

• Low frequency enhancement (L.BOOST)

• Beep amplifier

• Output suppression circuit (PVSS)

• Power switch

• Muting switch