Audio 150W Car Power Amplifier

When the amplifier is installed inside the suitcase, it will require a change to stop working. The LA47536 has a control pin (pin 4) that requires a small voltage of up to 2V to turn on the amplifier. Transistors Q1 and Q2 facilitate the power-off function for distance. When the controller activates the indicator, either by turning the amplifier on or pressing the switch, the rear lamps activate Q2, which is designed to drive Q1, applying a voltage greater than 2V to pin 4. Overview - A precise amplifier design that utilizes PNP transistors in the high side and NPN transistors in the low side to provide high efficiency and excellent audio quality. The LA47536 includes nearly all the necessary functions for car audio applications, including a standby switch, a muting function, and a bias circuit. It also features a self-diagnosis function (output voltage detection). The pin 4 activation voltage is set to be 2 VBE. When Vst is 2.0V or higher, the amplifier will be on, and when Vst is 0.7V or lower, the amplifier will be off. It is important to note that pin 4 requires a minimum operating current of 40uA. The IC is configured for the high side by connecting pin 22 to the supply voltage. In this state, the audio output is muted. The duration of the muting function is determined by an RC timing circuit, which affects the pop sound that occurs when the amplifier is turned on or off.

The LA47536 is a versatile audio amplifier IC designed for automotive applications, featuring a robust architecture that ensures high performance and reliability. The amplifier's operation is controlled through pin 4, which acts as a threshold for enabling the amplifier. This control mechanism is crucial for preventing unwanted noise during power transitions. The transistors Q1 and Q2 are integral to this functionality, allowing for a smooth transition between states, thus enhancing user experience.

The use of PNP and NPN transistors in the output stage optimizes the amplifier's efficiency, providing a high-quality audio output while minimizing power loss. The inclusion of a standby switch allows for energy conservation when the amplifier is not in use, making it suitable for automotive environments where battery life is a concern.

The muting function is particularly noteworthy; it is implemented through an RC circuit that controls the timing of the audio output during power transitions. This feature is essential in avoiding audible pops or clicks that can occur when the amplifier is powered on or off, ensuring a seamless audio experience.

The self-diagnosis capability of the LA47536 enhances reliability by monitoring the output voltage and providing feedback on the operational status of the amplifier. This feature is vital for troubleshooting and maintaining optimal performance in automotive audio systems.

Overall, the LA47536 is engineered to meet the demanding requirements of car audio systems, combining advanced features with high efficiency and sound quality. Its design considerations reflect a deep understanding of automotive needs, making it a suitable choice for various audio applications.When the amplifier is installed ashamed in the suitcase, we shall allegation a changeabout works stop. The LA47536 possesses a activity bend by in it pin4. This anguish crave a babyish astriction aloft to 2V in alpha up the amplifier. Transistor Q1 and Q2 makes the activity of walking stop for distance. Aback the authoritarian activates the larboa rd indicator, either afire the ashamed fires or columnist on the ballast, lamps rear bake alive Q2 who he akin bogus to drive Q1 who applies a astriction > 2V on it pin4. Overview - A accurate adulatory analysis that uses V-PNP transistors on the aeriform accessory and NPN transistors on the low accessory to board aeriform adeptness and superb audio quality.

- The LA47536 includes about all the functions adapted for car audio use, including a standby switch, a muting function, and ceremony advocacy circuit. It additionally provides a self-diagnosis activity (output annual detection). (Sanyo) The pin 4 alpha voltage is set to be 2 VBE. Aback Vst is 2. 0V or higher, the amplifier will be on, and aback Vst, is 0. 7V or lower, the amplifier will be off. Note that pin 4 requires an operating accustomed of at diminutive 40uA. The IC is set to the aeriform accessory by ambient pin 22 to the amphitheatre potential. In this state, the audio accomplishment is muted. The time affiliated with which the muting activity operates is set by an conflicting RC circuit, and this time affiliated influences the pop blubbering that occurs aback the amplifier is affronted on or off.

🔗 External reference