2.2W x 2 Class-D Audio Power Amplifier

タイトルまたは説明

The PT***4 is a CLASS-D power amplifier designed for audio equipments, maximum output power can reach up to 2.2W x 2 (VDD=5V, RL=4Ω, THD=*0%). The PT***4 composed of exclusively designed CLASS-D circuitry (patented) by PTC, along with the most advanced semi-conductor fabricate technology. When compared to the traditional CLASS-AB amplifiers, the PT***4’s shows much higher efficiency (> *0%), low heat dissipation, and also performs superior audio quality. The PT***4’s external circuitry is simple and easily accessible, and consists of flawless self-protection capabilities. The chip’s packaging is small, thus it occupies an insignificant amount of space on the circuit board; therefore, making it the predominant choice when it comes to audio amplifiers. FEATURES • CMOS Technology • Stereo differential analogue • Maximum output power 2.2W(4Ω) × *@********************put low-pass LC filter is not necessary • Low EMI radiation, CISPR *2 regulation Compliant • 4 level voltage gain selection • Contains shutdown function for individual channel • Fast start-up time (3.5ms) when shutdown awake up • Built-in short circuit protection • Built-in over-temperature protection • High efficiency (*5%, 8Ω load), low heat dissipation • Wafer level WLCSP *6 balls package