N° of component 

1W Headphones Amplifier (CB977E)

The circuit shown in the figure below is suggested by ON Semiconductor (, based on its integrated circuit NCP4896. This is an amplifier that can supply 1 W of power at BTL configuration with 8 ohm load from 5 V. This power supply circuit also supplies power 250 mW at 2.6 V and 90 mW with a 32 ohm load and power of 5 V. The device provides high quality audio requiring few external components. We also find the use of shutdown down consumption from external logic. Range of supply voltages is 2.2 V to 5.5 V and the integrated circuit comes in Flip-Chip 9-pin case. The device can also excite capacitive loads up to 1 nF and have configurable externally pin. Since the circuit has excellent PSRR and can be powered directly from a battery without the need to merge a LDO.





Circuit Bench