BL6281GSO

A Class-AB audio power amplifier designed for mobile phone, MID and other portable communication devices. It is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. It was designed specifically to provide high quality output power with a minimal amount of external components. It does not require output coupling capacitors or bootstrap capacitors. And with ultra low shutdown current, it is ideally suited for mobile phone, MID and other low voltage applications where minimal power consumption is a primary requirement. With special pop-click eliminating circuit, it provides perfect pop-click characteristic during turn-on and turn-off transitions. It is unity-gain stable and can be configured by external gain-setting resistors.

Applications

• MID
• Wireless handsets
• Portable electronic devices
• PDAs
• Handheld computers

Key features

• Improved PSRR at 217 Hz & 1 KHz 60 dB
• Power output at 5.0V, 10% THD+N, 4 Ω（SOP8 package） 1.7W(typ.)
• Power output at 5.0V, 1% THD+N, 8Ω 1.1 W (typ.)
• Ultra low shutdown current 0.1 uA (typ.)
• 2.2V - 5.5V operation
• Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions
• No output coupling capacitors, snubber networks or bootstrap capacitors required
• Unity-gain stable
• External gain configuration capability
• Packages: MSOP8、SOP8