LA4906

• Power dissipation reduced by 50% (for music at average power levels, as compared to earlier Sanyo products)
• The number of required signal-following switching circuits has been reduced to just one circuit for two channels, reducing the number of external components.
• The output is a pure analog signal; no switching noise whatsoever appears on the output lines.
• Uses a single-voltage power supply from 8 to 18 V.
• Provides a full range of built-in protection circuits, including shorting of output pin to V_CC, shorting of output pin to ground, overvoltage, and thermal shutdown protection.
• Built-in standby switch
• Clipping detection function

The LA4906 is a BTL two-channel power amplifier for use in car audio systems. It uses a signal-following switching technique in the power supply for the amplifier output stage and a newly-developed nonlinear amplifier that features nonlinear characteristics in the signal system. These features hold increases in the number of external components to a minimum, and reduce power dissipation (and thus heat generation) in the practical operating region to about 1/2 that of earlier class B amplifier ICs. This can contribute significantly to miniaturization and weight reduction in the heat sink and to reduction of the heat generated within the end product case.