LA4728

Ordering number : EN 5716 * Monolithic Linear IC LA4728 2-Channel BTL Power Amplifier (35 W+35 W) with Standby Switch for Car Stereos Preliminary Overview The LA4728 is a BTL two-channel power IC for car audios 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 LA4728 provides powerful bass and clear treble. Package Dimensions unit: mm 3113A-SIP14HZ [LA4728] Features ⋅ High power: supports total output of 35 W+35 W. [EIAJ power] (VCC=14.4 V, THD=30 %, RL=4 Ω) ⋅ Less pop noise. ⋅ Designed for excellent sound quality. (fL<10 Hz, fH=130 kHz) ⋅ Any rise time settable by an external capacitor. ⋅ Standby switch circuit on chip. (microcontroller supported) ⋅ Various protectors on chip. (output-to-ground short/ output-to-VCC short/ load short/ overvoltage/ thermal shutdown circuit) ⋅ The LA4728 is pin-compatible with the LA4725. SANYO: SIP14HZ Specifications Maximum Ratings at Ta = 25 ˚C Parameter Maximum supply voltage Surge supply voltage Maximum output current Allowable power disspation Operating temperature Storage temperature Symbol VCC max VCC surge f ≤ 0.2 s, single giant pulse IO peak Pd max Topr Tstg Per channel With arbitrarily large heat sink Conditions Ratings 18 50 3.5 32 –35 to +85 –40 to +150 Unit V V A W ˚C ˚C Recommended Conditions at Ta ...