LA4708

IC BTL PWR AMP 20W 2CH SIP18H

Overview

The is a BTL two-channel power IC for car audio 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 LA4708 provides powerful bass and clear treble. In addition, the LA4708 features on-chip protectors and standby switch. The LA4708 is also pin-compatible with the LA4705NA car stereo-use 17 W two-channel power IC, and can be substituted for the LA4705NA for higher power. When the board is shared, pins 1 and 9 must be left open.

Features

.High power: supports total output of 30 W + 30 W

VCC= 13.2 V, THD = 30%, RL=4Ω

.Supports RL=2ΩPO= 30 W when VCC= 13.2 V, THD = 10%

.Designed for excellent sound quality fL< 10 Hz, fH= 130 kHz

.NF capacitorless

.Any on time settable by external capacitor

.Less pop noise

.Standby switch circuit on chip microprocessor supported

.Various protectors on chip

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

load short/overvoltage/thermal shutdown circuit