SGM2821 Datasheet | SG Micro

DESCRIPTION The SGM2821 is a high efficiency, high-performance, Class-D audio power amplifier with dual mode of Automatic Level Control (ALC). It operates from 2.5V to 5.5V supply voltage. When powered with 5V supply voltage, it is capable of delivering a continuous average output of 2.4W into 4Ω load with 1% THD+N. As a Class-D audio amplifier, the SGM2821 features up to 88% efficiency and 72d B PSRR at 217Hz which make the device ideal for battery-powered high-quality audio applications. A key benefit of the SGM2821 over typical Class-D audio power amplifiers is that it generates much less EMI emissions, thus greatly simplifying the system design for portable applications. The device also includes the over-current and short-circuit protections with auto-recovery, which ensures the device can be operated safely and reliably without the need for system interaction. APPLICATIONS Mobile Phones Portable Navigation Devices Multimedia Internet Devices Portable Speakers FEATURES - Filterless Class-D Operation - High Efficiency up to 88% - Automatic Level Control to Eliminate Output Clipping - Output Power at 5V Supply (ALC-OFF) - 3.0W (4Ω Load, 10% THD+N) - 2.4W (4Ω Load, 1% THD+N) - 1.7W (8Ω Load, 10% THD+N) - 1.4W (8Ω Load, 1% THD+N) - Low THD+N: 0.05% (VDD = 3.6V, f = 1k Hz, RL = 8Ω, PO = 0.5W) - ALC Range: 13d B - Low Quiescent Current: 2.6m A at VDD = 3.6V - Low Shutdown Current: 0.1µA (TYP) - High PSRR: 72d B at 217Hz - No Bypass Capacitor Required for the mon-Mode Bias - Under-Voltage Lockout - Auto-Recovering Over-Current and Short-Circuit Protections - Thermal Overload Protection - Low EMI Design - Available in a Green UTQFN-1.5×1.5-9L Package TYPICAL APPLICATION To B attery CS CI INN Differen tia l Input INP CI ON VDD INN INP SGM2821 CTRL GND/P GND To B attery CS CI IN Sing le-end ed...