VA2208 Overview
protection scheme to prevent the damage of Applications speaker voice coils. - LCD TV - Multimedia Speakers The VA2208 is available in small TSSOP-28 green - Sound Bar package with exposed pad. Typical Application VA2208 Rev A.02 1 http://.viva-elec..tw VA2208 Functional Block Diagram VREG RINP Gain Adjust RINN Gain Adjust GAIN0 GAIN1 Gain Control FAULT_B PLIMIT Swing Reference AVDD VREG SD_B PBTL Regulator TTL Buffer LINP Gain Adjust LINN Gain Adjust AGND Power Limit Gate Driver PWM Logic VREG Gate Driver Ramp Generator Biases & References Startup Protection Logic SC Detect Thermal Protect DC Detect UVLO/OCLO VREG Power Limit Gate Driver PWM Logic VREG Gate Driver BSPR PVDDR ROUTP PVSSR BSNR PVDDR ROUTN PVSSR BSPL PVDDL LOUTP PVSSL BSNL PVDDL LOUTN PVSSL VA2208 Rev A.02 2 http://.viva-elec..tw VA2208 Pin Assignments And Descriptions SD_B
VA2208 Key Features
- Operation Voltage from 8V to 26V
- Maximum 88% Efficiency with an 8Ω Speaker
- 15W@8Ω Load with THD+N =10% at 16V
- 10W@8Ω Load with THD+N =10% at 13V
- Four 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