AD51653

ESMT Preliminary 4.2W Mono Class-K Audio Amplifier AD51653 Features z Supply voltage range: 2.8 V to 5.5 V z Static operation current: 3.5mA z Shutdown current: <1uA z Loudspeaker peak power from 5V supply: „ 4.2W @ 4Ω, Po,10% THD+N „ 3.5W @ 4Ω, Po,1% THD+N z Loudspeaker peak power from 4.2V supply: „ 3W @ 4Ω, Po,10% THD+N „ 2.6W @ 4Ω, Po,1% THD+N „ 2.9W @ 8Ω, Po,10% THD+N „ 2.3W @ 8Ω, Po,1% THD+N z Gain setting: 27.5dB z Integrated adaptive charge-pump circuit z Non-Crack-Noise (NCN) Function z Pop noise and click noise reduction z Under-Voltage detection z Short-Circuit protection with auto recovery z Over temperature protection with auto recovery Applications z Portable Multimedia Devices z Mobile Phones z GPS z Handsets Description The AD51653 is a mono, class-D audio amplifier with a built-in, adaptive charge pump circuit for better system power efficiency. Due to its design, AD51653 can provide a constant 3W peak output power with 4ohm speaker at 4.2V of battery o...