LM48411 Datasheet | Texas Instruments

FEATURES - 2 E2S System Reduces EMI Preserving Audio Quality and Efficiency - Output Short Circuit Protection - Stereo Class D Operation - No Output Filter Required for Inductive Loads - Logic Selectable Gain - Independent Shutdown Control - Minimum External ponents - "Click and Pop" Suppression Circuitry - Micro-Power Shutdown Mode - Available in Space-Saving 0.5mm Pitch DSBGA Package APPLICATIONS - Mobile Phones - PDAs - Portable Electronic Devices KEY SPECIFICATIONS - Efficiency at 3.6V, 500m W into 8Ω Speaker: 87% (typ) - Efficiency at 3.6V, 100m W into 8Ω Speaker: 80% (typ) - Efficiency at 5V, 1W into 8Ω Speaker: 88% (typ) - Quiescent Current, 3.6V Supply: 4.2m A (typ) - Power Output at VDD = 5V RL = 4Ω, THD ≤ 10%: 2.5W (typ) - Power Output at VDD = 5V RL = 8Ω, THD ≤ 10%: 1.5W (typ) - Total Shutdown Power Supply Current: 0.01µA (typ) - Single Supply Range: 2.4V to 5.5V DESCRIPTION The LM48411 is a single supply, high efficiency, 2.5W/channel Class D audio amplifier. The LM48411 features TI's Enhanced Emissions Suppression (E2S) system, that features a unique patent-pending ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external ponent count, board area consumption, system cost, and simplifying design. The LM48411 is designed to meet the demands of mobile phones and other portable munication devices. Operating on a single 5V supply, it is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The wide band spread spectrum architecture of the LM48411 reduces EMIradiated emissions due to the modulator frequency. The LM48411 features high efficiency pared to a conventional Class AB amplifier. The E2S system includes an advanced, patent-pending edge rate control (ERC) architecture that further reduce emissions by...