Audio Power Amplifier -Class F


PT3300

The PT3300 is a Class-F audio power amplifier with high efficiency and high quality. It has two modes of operation, Class-D mode and Class-F(Class-AB) mode, so can avoid FM radio interference. When operating with a 5V supply voltage, it is capable of driving a 4Ω speaker load at a continuous average output of 3.2W with 10% THD+N. The external application circuit is simple, integrated internal feedback resistor, do without LC low-pass filter. The PT3300 has HSOP8 (with heat sink) package, and has low EMI. It is very suitable for small volume, convenient portable audio products with FM radio. Built-in over-temperature protection, package size is not occupied PCB space. Meanwhile, the PT3300 offers built-in and shut-down control circuitry for optimal pop-free performance.

FEATURES


● CMOS technology

● Supply Voltage(VDD) from 2.5V to 5.5V

● Avoid FM radio interference

● Maximum output power:3.2W (VDD=5V, RL=4Ω, THD=10%）

● Integrated low-pass filter for out-of-band noise rejection

● Gv can be adjusted by adjusting the input resistance

● Shutdown function, turn on can into save mode

● Built-in pop and click noise suppress

● Built-in over-temperature protection

● Package Type- HSOP 8

APPLICATIONS


● Portable speaker

● LCD TV or Monitor

● Laptop or MID

● Portable DVD

資源下載

Documentation

Tools

Application Note

TitleFileVersionDate
Demo Board線路圖PT3300 Demo Board線路圖.pdfV1.02018/1/5