Audio amplifier CS35L45

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The CS35L45 is the industry’s most advanced smart boosted amplifier solution for driving maximum loudness in mobile devices without compromising playback audio quality. The IC’s hardware platform combines a mono 6.8 W Class D amplifier with the lowest noise and quiescent power consumption of any amplifier in its class. A digitally controlled Class H inductive boost converter is capable of boosting battery voltages up to 15 V for speaker playback. Speaker protection algorithms enable maximum loudness by allowing the amplifier to safely drive high output power while ensuring that the speaker’s thermal and excursion limits are not exceeded. Audio enhancement algorithms with tuning capabilities provide equalization, compression and psychoacoustic improvements to fine-tune the speaker to improve clarity, loudness and frequency response while preserving the sound quality of the audio. A cutting-edge battery management system adapts to speaker, audio and battery conditions to intelligently regulate battery current without sacrificing loudness or audio quality. The CS35L45 is housed in a 36-ball WLCSP package measuring just 6.5 mm2, which is one of the industry’s smallest packages for a smart audio amplifier. Features Integrated DSP with audio enhancement and speaker protection algorithms Cutting-edge battery management system protects battery and system while maintaining volume and quality -79 dB THD+N @ 1 W into 8 Ω 5μV Idle-channel noise – lowest in class 0.043 mW idle power – lowest in class 6.5 mm2 36-ball WLCSP package