SGM2820 Datasheet | SG Micro

DESCRIPTION The SGM2820 is a high efficiency, low EMI, filterless, Class-D audio amplifier with auto-recovering short-circuit protection. It operates from 2.5V to 5.5V supply voltage. When powered with 5V supply voltage, the SGM2820 is capable of delivering 3W into a 4Ω load or 1.7W into an 8Ω load, with 10% THD+N. As a Class-D audio amplifier, the SGM2820 features 88% efficiency and 70d B PSRR at 217Hz which make the device ideal for battery-powered high-quality audio applications. A key benefit of the SGM2820 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 includes the over-current and short-circuit protections with auto-recovery, which ensures the device can be operated safely and reliably without system interaction. APPLICATIONS Mobile Phones Portable Navigation Devices Multimedia Internet Devices Portable Speakers FEATURES - Filterless Class-D Operation - High Efficiency up to 88% - Maximum Output Power at 5V Supply - 3.0W (4Ω Load, THD+N = 10%) - 1.7W (8Ω Load, THD+N = 10%) - Maximum Output Power at 3.6V Supply - 1.5W (4Ω Load, THD+N = 10%) - 0.88W (8Ω Load, THD+N = 10%) - Low THD+N: 0.03% (VDD = 3.6V, f = 1k Hz, RL = 8Ω, PO = 0.5W) - Low Quiescent Current: 2.1m A at VDD = 3.6V - Maximum Gain: 24d B (15.9V/V) - Low Shutdown Current: 0.1µA - High PSRR: 70d 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 Green UTQFN-1.5×1.5-9L and MSOP-8 Packages TYPICAL APPLICATION To B attery To B attery Differen tia l...