LA4905

Ordering number : EN5504 Monolithic Linear IC LA4905 17-W, 2-Channel BTL AF High-Efficiency Power Amplifier for Car Stereo Systems Overview The LA4905 is a BTL 2-channel power amplifier IC for use in car audio systems. Increases in the number of external components are held to a minimum by adopting both a signal-following type switching scheme in the amplifier’s output stage power supply, and a newlydeveloped nonlinear amplifier that has nonlinear characteristics in the signal system. The power dissipation (thermal loss) in the actual operating range has been reduced to about 1/2 that of earlier class B amplifier ICs. This contributes significantly to miniaturization of the heat sink and to reduction of heating within the set. Package Dimensions unit: mm 3160-SIP23HZ [LC4905] Features Power dissipation reduced by 50% (When average music power is measured, and when compared to earlier Sanyo products.) The number of required signal follower circuits has been reduced to a single circuit for two channels, allowing the number of external components to be reduced. The output is a pure analog signal: no switching noise is output to the output lines. Operates on an 8 to 18-V single-voltage power supply. Full complement of built-in protection circuits (shorting to the power supply, shorting to ground, overvoltage, and thermal protection) Built-in standby switch SANYO: SIP23HZ Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum output...