ON Semiconductor – 5W audio amplifier drives loads up to 8Ω



ON Semiconductor’s LA4425A is a 5W amplifier for car audio and infotainment equipment which may be implemented with the addition of just two external coupling capacitors.

The amplifier is suitable for use with loads ranging from 2Ω to 8Ω. Its 5W power rating is specified when operating from the recommended supply voltage of 13.2V, into a 4Ω load with total harmonic distortion of 10%.

The amplifier’s lower roll-off frequency is 40Hz, and its upper band is 90kHz.

• Supply-voltage range: 5V-16V
• Over-voltage protection
• On-chip circuit for reducing pop noise