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PT2305 V1.0

- 1 -

September, 2004

2.5W × 2 Class AB Audio Power Amplifier

PT2305

DESCRIPTION

The PT2305 is an audio power amplifier utilizing CMOS Technology specially designed for audio

purpose. It can deliver 2.5W × 2 power output to the 4Ω load. The power consumption is very low in

stand-by. Total harmonic distortion is lower than 0.03%. The output structure is BTL (Bridge-Tied Load)

mode for driving speaker load mode. Built-in over-temperature protection, package size is not occupies

PCB space. It is suitable for small or portable products.

FEATURES

• CMOS Technology

• Operating voltage: 2.7V ~ 6V

• Output power 2.5W × 2 (4Ω/10%THD)

• Built-in 31 steps volume controller

• Suppress the pop and click noise when mode changed

• Extreme low current consumption in Shutdown mode (Icc<0.7µA)

• Built-in over temperature protection

APPLICATIONS

• LCD monitor or TV

• Portable audio

• Multimedia speakers

• Other audio applications