VA2221A Overview
put Short & Over-Heat Protection Circuitry to ensure Applications device reliability. This device also provides the DC - LCD TV detect and protection scheme to prevent the dam- - Multimedia Speakers age of speaker voice coils. - Sound Bar The VA2221L, VA2221A is available in small TSSOP28 green package with exposed pad. Typical Application LINE-IN RIGHT 1μF 1μF LINE-IN LEFT GAIN CONTROL 1μF 1μF Fault_(A Ver.) SHUTDOWN PLIMIT AVDD 1μF 1μF RINP RINN LINN LINP Fault_B SD_B BSPR ROUTP ROUTN PVSSR PVSSL PLIMIT AVDD VREG AGND BSNL LOUTN LOUTP BSPL 0.22μF 0.22μF 0.1μF Functional Block Diagram
VA2221A Key Features
- Operation Voltage from 6V to 26V
- Excellent EMI Performance
- Maximum 88% Efficiency with an 8Ω Speaker
- Stereo Mode
- Two Selectable Gain Settings
- Scalable Power Limit Function
- Speaker DC Detection and Protection
- Parallel BTL Speaker Driving Connection
- Thermal Protection with Auto-Recovery
- Speaker Protection Circuitry