Schematic Diagram LA47536 High power car audio amplifier circuit

Description: This car audio amplifier circuit is based on the LA47536 audio amplifier integrated circuit designed by Sanyo. This audio amplifier circuit is specifically designed for car audio power amplifiers. The LA47536 car audio amplifier IC features four output channels and can deliver a maximum output power of 45 watts per channel with a 4-ohm load at 10% total harmonic distortion (THD). The LA47536 incorporates nearly all the necessary functions for car audio applications, including a standby switch, a muting function, and various protection mechanisms (such as output pin-to-VCC short, output pin-to-GND short, load short, over-voltage protection, and a thermal shutdown circuit). Additionally, it offers a self-diagnosis function for output offset detection. The audio amplifier IC has a voltage gain of 32 dB and requires a power supply of 14.4 volts DC, which can be sourced from the car battery.

The LA47536 audio amplifier circuit is engineered for high-performance audio amplification in automotive environments. The integrated circuit supports four independent output channels, making it suitable for multi-channel audio systems. With a maximum output power of 45 watts per channel at a 4-ohm load, the amplifier is capable of driving a variety of speaker configurations, ensuring clarity and volume that can enhance the in-car listening experience.

Key features such as the standby switch and muting function allow for user-friendly operation, enabling the amplifier to conserve power when not in use and suppress unwanted noise during transitions. The inclusion of multiple protection mechanisms is critical in automotive applications where environmental conditions can vary. These protections help prevent damage to the amplifier and connected speakers due to short circuits, voltage spikes, or overheating, thereby enhancing reliability and longevity.

The self-diagnosis function for output offset detection is particularly beneficial for maintaining audio quality. By monitoring the output offset, the circuit can identify and address issues that may degrade sound performance. The voltage gain of 32 dB indicates that the amplifier can significantly boost the input audio signal, making it suitable for various audio sources commonly used in vehicles.

For operation, the circuit requires a stable power supply of 14.4 volts DC, typically provided by the vehicle's battery. This voltage level is standard in automotive applications, ensuring that the amplifier performs optimally under typical operating conditions. Overall, the LA47536 audio amplifier circuit represents a robust solution for car audio systems, combining essential features with high output capabilities to deliver an exceptional audio experience.This car audio amplifier circuit is based on LA47536 audio amplifier integrated circuit designed by Sanyo. This audio amplifier circuit is specially designed for car audio power amplifiers and. LA47536 car audio amplifier IC has four output channels and is capable to provide a maximum output power of 45 watts on each channel on a 4 ohms load wit

h 10% THD. The LA47536 includes almost all the functions required for car audio use, including a standby switch, muting function, and various protections (output pin-to-VCC short, output pin-to-GND short, load short, over voltage, thermal shut down circuit ). It also provides a self-diagnosis function (output offset detection). Also this audio amplifier IC has a voltage gain of 32 dB and a self-diagnosis function that detects the output offset.

For powering this car audio amplifier circuit you will need a 14. 4 volts DC, or you can use the car battery ( if you will use it for car ).