SGM2820
3W Low EMI Class-D Audio Power Amplifier with Auto-Recovering Short-Circuit Protection
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 70dB 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.
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 = 1kHz, RL = 8Ω, PO = 0.5W)
Low Quiescent Current: 2.1mA at VDD = 3.6V
Maximum Gain: 24dB (15.9V/V)
Low Shutdown Current: 0.1μA
High PSRR: 70dB 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-1.5×1.5-9L and MSOP-8 Packages
Mobile Phones
Portable Navigation Devices
Multimedia Internet Devices
Portable Speakers
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM2820YMS8G/TR | Active | MSOP-8 | 8 | Yes | Yes | Yes | Yes | MSL3 | -40℃ to +85℃ | View | View | 1-24 units : $0.525/unit 25-99 units : $0.45/unit 100-249 units : $0.375/unit 250-499 units : $0.3/unit 500-999 units : $0.2625/unit 1000-9999 units : $0.195/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 days | |
SGM2820YUSN9G/TR | Active | UTQFN-1.5×1.5-9L | 9 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | View | View | 1-24 units : $0.525/unit 25-99 units : $0.45/unit 100-249 units : $0.375/unit 250-499 units : $0.3/unit 500-999 units : $0.2625/unit 1000-9999 units : $0.195/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 98 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
