EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX98390 Boosted Class-D Amplifier with Integrated Dynamic Speaker Management General Description Benefits and Features The MAX98390 is a high-efficiency mono Class-D DSM Integrated Speaker Current and Voltage Sense smart amplifier that features an integrated boost convert- Requires no External Components TM er, integrated Dynamic Speaker Management , and Integrated Programmable 10V Boost Converter FET scaling for higher-efficiency at low output power. Bypass Mode Envelope Tracking The maximum boost converter output voltage is program- mable from 6.5V to 10V in 0.125V increments from a bat- Integrated Dynamic Speaker Management tery voltage as low as 2.65V. The boost converter sup- Thermal Protection ports bypass mode for lower quiescent current and im- Excursion Protection proved mid-power efficiency as well as envelope tracking Low-Frequency Extension which automatically adjusts the output voltage for maxi- 8-Band Parametric Equalizer mum efficiency. The boosted supply efficiently delivers up Dynamic Range Compression to 6.2W at 10% THD+N into a 4 load. Perceptual Power Reduction Debuzzer Integrated IV sense and Dynamic Speaker Management Stereo Bass Management allows louder, fuller audio while protecting the speaker against damage and improving sound quality. Ultra-Low Noise Floor 10V Output Noise 2 The PCM interface supports I S, left-justified, and 116dB Dynamic Range 16-channel TDM formats as a slave or master device with 2 I C control. Either BCLK or MCLK can be used as the in- Low Distortion0.01% THD+N ternal clock source providing system level flexibility. Output Power at 1% THD+N, V = 4.3V VBAT Thermal and other status data can also be read from the 5.1W into 8 2 I C interface. 5.1W into 4 Patented active emissions limiting edge rate and over- Output Power at 10% THD+N, V = 4.3V VBAT shoot control circuitry minimizes EMI and eliminates the 6.2W into 8 need for output filtering found in traditional Class-D de- 6.2W into 4 vices. System Efficiency A flexible brownout-detection engine (BDE) can be pro- 82% at 1.2W into 8, V = 3.7V VBAT grammed to initiate various current limiting, signal limiting, 86% at 0.45W into 8, V = 3.7V VBAT and clip functions to prevent dips in battery voltage. Dynamic Speaker Output FET Scaling Threshold, hysteresis, and attack-and-release rates are 2.65V to 5.5V Battery Voltage Range programmable. 2 2 I S/16-Channel TDM and I C Interfaces The MAX98390C is available in a 0.4mm pitch, 36-bump Class-D Edge Rate Control Enables Filterless wafer-level package. The MAX98390D is available in a Operation 0.5mm pitch, 30-bump wafer-level package. They are Advanced Brownout-Protection Engine specified over the extended -40C to +85C temperature Extensive Click-and-Pop Suppression range. Robust Short-Circuit and Thermal Protection Space-Saving, 30-Bump WLP Package (2.468mm x Applications 2.968mm, 0.5mm Pitch) or 36-Bump WLP Package Smartphones (2.418mm x 2.608mm, 0.4mm Pitch) Tablets Ordering Information appears at end of data sheet. Notebook Computers Single Li-ion Cell Devices IoT Devices Toys Dynamic Speaker Management is a trademark of Maxim Integrated Products, Inc. 19-100540 Rev 3 7/20MAX98390 Boosted Class-D Amplifier with Integrated Dynamic Speaker Management Simplified Block Diagram VBAT BOOST BDE MAX98390MAX98390 CONVERTER DAC CLASS-D 2 I C DYNAMIC CONTROL SPEAKER AND AUDIO MANAGEMENT INTERFACES (DSM) 2 I S/TDM I/V SENSE www.maximintegrated.com Maxim Integrated 2