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LM48511 - Audio Power Amplifier

General Description

The LM48511 device integrates a boost converter with a high-efficiency Class D audio power amplifier to provide 3-W continuous power into an 8-Ω speaker when operating from a 5-V power supply.

Key Features

  • 1 3-W Output into 8 Ω at 5 V With THD+N = 1%.
  • Selectable spread spectrum mode reduces EMI.
  • 80% Efficiency.
  • Independent regulator and amplifier shutdown controls.
  • Dynamically Selectable Regulator Output Voltages.
  • Filterless Class D.
  • 3-V to 5.5-V Operation.
  • Low shutdown current.
  • Click and pop suppression.
  • Key specifications.
  • Quiescent power supply current.
  • VDD = 3 V 9 mA (Typical).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Product Folder Order Now Technical Documents Tools & Software Support & Community LM48511 SNAS416K – JULY 2007 – REVISED NOVEMBER 2019 LM48511 3-W, Ultra-Low EMI, Filterless, Mono, Class D Audio Power Amplifier With Spread Spectrum 1 Features •1 3-W Output into 8 Ω at 5 V With THD+N = 1% • Selectable spread spectrum mode reduces EMI • 80% Efficiency • Independent regulator and amplifier shutdown controls • Dynamically Selectable Regulator Output Voltages • Filterless Class D • 3-V to 5.5-V Operation • Low shutdown current • Click and pop suppression • Key specifications – Quiescent power supply current – VDD = 3 V 9 mA (Typical) – VDD = 5 V 13.5 mA (Typical) – PO at VDD = 5 V, PV1 = 7.8 V, RL = 8 Ω, THD+N = 1% 3 W (Typical) – PO at VDD = 3 V, PV1 = 4.