TMPA2156D2

www.DataSheet4U.com Tai-1 Microelectronics www.taimec.com.tw Preliminary TMPA2156D2 Rev.1.0 September 7, 2005 0.73W/CH STEREO CLASS-D AUDIO POWER AMPLIFIER GENERAL DESCRIPTION The TMPA2156D2 is a STEREO class-D audio power amplifier IC. With SE(Single-Ended) configuration, it delivers up to 0.73W/CH power into a 3 ohms load or 0.6W/CH power into a 4 ohm load or 0.33W/CH power into an 8 ohm load. No external heat-sink is required. ♦ Up to 85% Power Efficiency ♦ Automatic output power control (APC) ♦ 2.2mA Quiescent Current at 5V For multiple-input applications, independent gain control and corner frequency can be implemented by summing the input sources through resistor ratio and input capacitor values. Automatic voltage gain control makes the best use of battery. ♦ Less Than 0.2uA Shutdown Current ♦ Popless Power-Up, Shutdown and Recovery ♦ Single-Ended output ♦ Thermal Shutoff and Automatic Recovery ♦ Short-Circuit Protection Analog input signal is converted into digital output which drives directly to the speaker. High power efficiency is achieved due to digital output at the load. The audio information is embedded in PWM（ Pulse Width Modulation） . ♦ FEATURES ♦ 2.5V to 6V Single Supply ♦ Up to 0.73W/CH at 5V, 3 ohms Package TSSOP8, SOP8 Available DataSheet4U.com DataSh ee APPLICATIONS Multimedia application includes Cellular Phones, PDAs, 2.1 channel, USB audio. It is also ideal for other portable devices like Wireless Radios. For best performance, please refer t...