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LM48520 Datasheet

Part Number LM48520
Manufacturers National Semiconductor
Logo National Semiconductor
Description Boosted Stereo Class D Audio Power Amplifier
Datasheet LM48520 DatasheetLM48520 Datasheet (PDF)

LM48520 Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum March 20, 2008 LM48520 Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum General Description The LM48520 integrates a boost converter with a high efficiency Class D stereo audio power amplifier to provide up to 1W/ch continuous power into an 8Ω speaker when operating from 2.7V to 5.0V power supply with boost voltage (PV1) of 5.0V. The LM48520 uti.

  LM48520   LM48520






Part Number LM48520
Manufacturers Texas Instruments
Logo Texas Instruments
Description Audio Power Amplifier
Datasheet LM48520 DatasheetLM48520 Datasheet (PDF)

LM48520, LM48520TLBD www.ti.com SNAS367C – FEBRUARY 2008 – REVISED APRIL 2013 LM48520 Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum Check for Samples: LM48520, LM48520TLBD FEATURES 1 •2 Click and Pop Suppression • Low 0.04μA Shutdown Current • 78% Efficiency • Filterless Class D • 2.7V - 5.0V Operation • 4 Adjustable Gain Settings • Adjustable Output Swing Limiter with Soft Clipping • Speaker Protection • Short Circuit Protection on Audio Am.

  LM48520   LM48520







Boosted Stereo Class D Audio Power Amplifier

LM48520 Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum March 20, 2008 LM48520 Boosted Stereo Class D Audio Power Amplifier with Output Speaker Protection and Spread Spectrum General Description The LM48520 integrates a boost converter with a high efficiency Class D stereo audio power amplifier to provide up to 1W/ch continuous power into an 8Ω speaker when operating from 2.7V to 5.0V power supply with boost voltage (PV1) of 5.0V. The LM48520 utilizes a proprietary spread spectrum pulse width modulation technique that lowers RF interference and EMI levels. The Class D amplifier is a low noise, filterless PWM architecture that eliminates the output filter, reducing external component count, board area, power consumption, system cost, and simplifying design. The LM48520 is designed for use in mobile phones and other portable communication devices. The high (78%) efficiency extends battery life when compared to Boosted Class AB amplifiers. The LM48520 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND). Also, external leakage is minimized via control of the ground reference via the SWOUT pin . The LM48520 has 4 gain options which are pin selectable via Gain0 and Gain1 pins. Output short circuit prevents the device from damage during fault conditions. Superior click and pop suppression eliminates audible transients during powerup and shutdown. Key Specifications.


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