SGM2822 Datasheet | SG Micro

DESCRIPTION FEATURES The SGM2822 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 for 8Ω load. When powered with 5.0V supply voltage, the SGM2822 is capable of delivering 1.7W into an 8Ω load, with 10% THD+N. As a Class-D audio amplifier, the SGM2822 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 SGM2822 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 - Supply Voltage Range: - 2.5V to 5.5V for 8Ω Load - 2.5V to 4.5V for 4Ω Load - Filterless Class-D Operation - High Efficiency up to 88% - Typical Output Powery： - 2.4W (VDD = 4.5V, 4Ω Load, THD+N = 10%) - 1.7W (VDD = 5V, 8Ω Load, THD+N = 10%) - 1.5W (VDD = 3.6V, 4Ω Load, THD+N = 10%) - 0.88W (VDD = 3.6V, 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-1.2×1.2-9L Package TYPICAL APPLICATION To B attery To B attery CIN INN RINE Differen tia l...