LA4708

Ordering number: EN5245A Monolithic Linear IC LA4708 20 W 2-channel BTL AF Power Amplifier for Car Stereos Overview The LA4708 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.) Package Dimensions unit: mm 3109-SIP18H [LA4708] Features . High power: supports total output of 30 W + 30 W = 13.2 V, THD = 30%, R = 4 Ω) . (V Supports R = 2 Ω (P = 30 W when V = 13.2 V, THD = 10%) . Designed for excellent sound quality (f < 10 Hz, f = 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 CC L L O CC L H SANYO : SIP18H (output-to-ground short/output-to-VCC short/ load short/overvoltage/thermal shutdown circuit) Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Surge supply voltage Maximum output current Allowable power dissipation...