OB6228P Class-D Audio Amplifier

The OB6228P is a dual-channel Class-D audio power amplifier operating from a single 5 V to 16 V supply. Each channel delivers 15.5 W continuous into 8 Ω at 15 V with 86% efficiency. A proprietary dynamic drive control scheme gives the OB6228P clean EMC behaviour, so no output LC filter is required. Integrated output over-current, die over-temperature, supply over/under-voltage and input DC protection keep the device safe under fault conditions. Power limiting lets one design drive speakers of different ratings from the same supply. Over-current and over-temperature protection self-recover after real-time detection, while a DC input fault latches the output off until the supply is recycled, protecting the speaker. Supplied in TSSOP-28 with an exposed thermal pad.

Key Features

• 15.5 W per channel at 10% THD+N into 8 Ω from a 15 V supply, with low temperature rise
• 10 W per channel into 8 Ω from a 12 V supply
• Single-supply operation from 5 V to 16 V
• Filterless output: EMC performance without an output LC filter
• Output over-current, over-temperature, supply OVP/UVP and input DC protection
• Adjustable power limit for different speaker ratings
• TSSOP-28 with exposed thermal pad for heat dissipation

Applications

• Smart TVs
• Active and powered speakers
• Portable trolley speakers
• Portable audio systems

Part Numbers

• OB6228PVP

Product family: On-Bright official page