5.5W – 2 Channel Audio Amplifier

This project is a 5.5W – 2 Channel Audio Amplifier based on LA4445 IC.

Description

The small 2 Channel amplifier constructed around Sanyo’s LA4445 IC delivers 5.5Watts +5.5 Watts at 4 ohm load, supply in 12V DC 2Amp, Input impedance 30K.

Specifications

• Dual Channels output : 5.5W
• Minimum External Parts
• Very small pop noise at the time of power supply ON/OFF
• Good ripple rejections
• Small residual noise
• Built-in protectors 1. Thermal Protector 2. Overvoltage Surge Protector
• Standard Audio signal
• Supply 12V DC
• Load : 4 Ohms Speaker on Each Channel
• Voltage Gain : 50DB
• Output 5.5W on each Channel (THD 10%)
• Total harmonic distortion 1% Max @ Po=1W
• Input impedance 30 K-ohms

Schematic

Parts List

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