DESCRIPTION

The PT2004 is a CLASS-D power amplifier designed for audio equipments, maximum output power can reach up to 2.2W x 2 (VDD=5V, RL=4?, THD=10). The PT2004 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 PT2004’s shows much higher efficiency (> 80), low heat dissipation, and also performs superior audio quality.

The PT2004’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 input

? Maximum output power 2.2W(4?) × 2 @ THD=10

? Output low-pass LC filter is not necessary

? Low EMI radiation, CISPR 22 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 (85, 8? load), low heat dissipation

? Wafer level WLCSP 16 balls package

APPLICATIONS

? Mobile phone

? Portable Media Player

? Personal Navigation Device

? Hands-free phone