LM386 3-5W Mono DC 3.7-12V electret microphone amplifiers with Volume Control

• The LM386 is an efficient digital amplifier power stage for driving speakers up to 3-5W in mono.

• The advanced oscillator/PLL circuit employs multiple switching frequency options to avoid AM interferences.

• The LM386 is fully protected against faults with short-circuit protection and thermal protection as well as over-voltage, under-voltage and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

• It can be used to directly drive small power speakers, suitable for microphone head amplifier Practical application: Deaf hearing aid: Board connected to the microphone head, power supply, headphones is a good effect of hearing loss of deaf

Specification:

• Supply voltage: DC 3.7V - 12V, Can be used with Li-ion batteries

• Output power: 1 x3w (mono)

• Signal to noise ratio: 100 dB

• Recommend speaker impedance: 8 ohm is best (4 ohms 6 ohms can also be used)

• Signal to noise ratio: 100 dB; Size: 25mm*25mm