LM48520, LM48520TLBD
www.ti.com LM48520 SNAS367C – FEBRUARY 2008 – REVISED APRIL 2013 Boosted Stereo Class D Audio Power Amplifier
with Output Speaker Protection and Spread Spectrum
Check for Samples: LM48520, LM48520TLBD FEATURES 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. 1 2 Click and Pop Suppression
Low 0.04ОјA 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 …
