LM48410

LM48410 www.ti.com SNAS403E – FEBRUARY 2007 – REVISED MAY 2013 LM48410 Low EMI, Filterless, 2.3W Stereo Class D Audio Power Amplifier with 3D Enhancement Check for Samples: LM48410 FEATURES 1 2 Selectable Spread Spectrum Mode Reduces EMI Output Short Circuit Protection Stereo Class D Operation No Output Filter Required 3D Enhancement Logic Selectable Gain Independent Channel Shutdown Controls Minimum External Components Click and Pop Suppression Micro-Power Shutdown Available in Space-Saving 4mm x 4mm WQFN Package APPLICATIONS Mobile Phones PDAs Laptops KEY SPECIFICATIONS Quiescent Power Supply Current at 3.6V supply 4mA Power Output at VDD = 5V, RL = 4Ω, THD ≤ 10% 2.3W (typ) Power Output at VDD = 5V, RL = 8Ω, THD ≤ 10% 1.5W (typ) Shutdown current 0.03μA (typ) Efficiency at 3.6V, 100mW into 8Ω 80% (typ) Efficiency at 3.6V, 500mW into 8Ω 85% (typ) Efficiency at 5V, 1W into 8Ω 86% (typ) DESCRIPTION The LM48410 is a single supply, high efficiency, 2.3W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. A selectable spread spectrum modulation scheme suppresses RF emissions, further reducing the need for output filters. The LM48410 is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delive...