SGM2822T
3.2W Low EMI Class-D Audio Power Amplifier with Auto-Recovering Short-Circuit Protection
The SGM2822T 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 SGM2822T is capable of delivering 3.2W into a 4Ω load or 1.8W into an 8Ω load, with 10% THD+N.
As a Class-D audio amplifier, the SGM2822T features 92% efficiency and 87dB PSRR at 217Hz which make the device ideal for battery-powered high-quality audio applications.
A key benefit of the SGM2822T 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.
- Supply Voltage Range: 2.5V to 5.5V
- Filterless Class-D Operation
- High Efficiency up to 92%
- Typical Output Power：
- 3.2W (VDD = 5V, 4Ω Load, THD+N = 10%)
- 1.8W (VDD = 5V, 8Ω Load, THD+N = 10%)
- 1.6W (VDD = 3.6V, 4Ω Load, THD+N = 10%)
- 0.9W (VDD = 3.6V, 8Ω Load, THD+N = 10%)
- Low THD+N: 0.02% (VDD = 3.6V, f = 1kHz, RL = 8Ω, PO = 0.5W)
- Low Quiescent Current: 2.1mA at VDD = 3.6V
- Internal Equivalent Feedback Resistor: 300kΩ
- Low Output Noise: 30μV
- Low Shutdown Current: 0.1µA
- High PSRR: 87dB at 217Hz
- No Bypass Capacitor Required for the Common-Mode Bias
- Under-Voltage Lockout
- Auto-Recovering Over-Current and Short-Circuit Protections
- Thermal Overload Protection
- Low EMI Design
- Available in Green UTQFN-1.2×1.2-9LPackage
Mobile Phones
Portable Navigation Devices
Multimedia Internet Devices
Portable Speakers
