SGM2821

アクティブ

3W Low EMI Class-D Audio Power Amplifier with Dual Mode of Automatic Level Control

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 72dB 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.

特性

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 = 1kHz, RL = 8Ω, PO = 0.5W)
ALC Range: 13dB
Low Quiescent Current: 2.6mA at VDD = 3.6V
Low Shutdown Current: 0.1μA (TYP)
High PSRR: 72dB 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 a Green UTQFN-1.5×1.5-9L Package

アプリケーション

Mobile Phones

Portable Navigation Devices

Multimedia Internet Devices

Portable Speakers

注文書

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)
SGM2821YUSN9G/TR	アクティブ	UTQFN-1.5×1.5-9L	9	Yes	Yes	Yes	Yes	MSL1	-40℃ to +85℃	閲覧	閲覧	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 : 91 days

* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。

** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。