Overview

The LA4705 is a BTL two-channel power IC for car audio and radio-cassette players developed in pursuit of excellent sound quality. Low-region frequency characteristics have been improved through the use of a new NF capacitorless circuit, and crosstalk which causes ‘‘muddy’’ sound has been reduced by improving both circuit and pattern layout. As a result, the LA4705 provides powerful bass and clear treble. In addition, the LA4705 features on-chip protectors and standby switch.

Features

.High power: supports total output of 25 W + 25 W

(VCC= 14.4 V, THD = 30%, RL=4Ω)

.Less pop noise

.Designed for excellent sound quality

(fL< 10 Hz, fH= 130 kHz)

.Any on time settable by external capacitor

.Standby switch circuit on chip (microprocessor supported)

.Various protectors on chip

(output-to-ground short/output-to-VCCshort/

load short/overvoltage/thermal shutdown circuit)

.NF capacitorless

.Supports RL=2Ω