Monolithic Power Systems MP7758 Audio Amplifiers are inductor less, fixed frequency, analog input Class-D audio amplifiers that drives power stereo speakers in a bridge-tied load configuration. These amplifiers are completely integrated thus reducing the solution size. The MP7758 audio amplifiers integrate 240mΩ power MOSFETs and short-circuit protection circuits. These audio amplifiers feature start-up/shutdown pop elimination, advanced EMI performance and are capable of passing EMC tests without an inductor. The MP7758 audio amplifiers are capable of delivering 15W per channel into 8Ω speakers with a 16V power supply utilizing astereo BTL structure. These devices exhibit a high fidelity of class-AB amplifiers, with high efficiency, offer an adjustable power limit (PLIMIT) function, and fault output flag. The MP7758 audio amplifiers are widely used in wireless/portable speakers, TVs, DVD receivers, and active speakers.
FEATURES 5V to 18V operation from a single supply ±5A peak current output Output power: 9.5W/channel at 12V, 8Ω load, 10% THD, 15W/channel at 16V, 8Ω load, 10% THD 90% efficiency with 8Ω load, 10% THD, 1kHz, 12V supply voltage 240mΩ power MOSFETs Start-Up/Shutdown pop elimination Short-circuit protection circuits Inductorless topology Advanced EMI performance All switches are current limited Internal Under-Voltage Protection (UVP) Internal thermal protection Adjustable power limit Automatic shutdown with zero input signal detection Fault output flag Available in a TSSOP-28 EP package APPLICATIONS Wireless/portable speakers TVs DVD receivers Active speakers BLOCK DIAGRAM
