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170W Power Amplifier based LM4651 and LM4652
Here the circuit diagram of 170W Power Amplifier based LM4651 and LM4652 power MOSFET manufactured by National Semiconductor. The merge of the LM4651 driver IC along with the LM4652 power MOSFET Class D power amplifier IC gives you a excellent amplifier solution, ideal for self powered loudspeakers, subwoofers and high quality automobile boosters.
The LM4652 is really a totally integrated H-bridge Power MOSFET IC in a TO220 power package. The IC features a built in temperature sensor to alert the LM4651 when the die temperature is higher than the threshold restriction.
The LM4651 is really a fully integrated standard pulse width modulator (PWM) driver, featured with undervoltage, over modulation, short circuit, and thermal shutdown protection circuitry. The IC also has a standby function feature which shuts down the pulse width modulation, reducing supply current.
Applied collectively, the LM4651 and LM4652 create a simple, compact, effective, excellent power audio amplifier choice carry out with proper protection, generally experienced only in Class AB amplifier circuits.
Take a note that the IC is discontinued, so the National Semicondustor is not producing this kind of IC. But it’s possible there are some stock of LM4651 and LM4652 on some electronic component stores. Before you build this 170W power amplifier circuit, make sure you have the ICs first.
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