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LM386: Device recommendation for increase of output power

Part Number: LM386
Other Parts Discussed in Thread: LM380, TAS2110

Hi team,

Could you give me comment on following customer question? The customer firstly selected LM386, but the increase of output power is needed based on proto type test result.

Q1. Could you recommend audio power amplifier like LM380 to meet stable 2W output?

They will use 8Ohm speaker with 2W rating, and the sound pressure level is 80-85dB. 

  • Hi Sasaki-san,

    LM380 seems OK for the required amount of power.

    Some Class-D options:

    • If customer is looking for an analog input amplifier with mid-high voltage rails, perhaps some TPA31xx could be option, like TPA311D1.
    • If customer can consider digital input amplifier with low voltage rails (up to 5.5V), perhaps TAS25xx could be option, like TAS2110.
      There are not much boosted amplifiers with analog inputs.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators