TMPA2155DS

www.DataSheet4U.com Tai-1 Microelectronics www.taimec.com.tw / www.class-d.com.tw Preliminary TMPA2155DS Rev.1.0 June 27, 2006 2.7W/CH STEREO CLASS-D AUDIO POWER AMPLIFIER GENERAL DESCRIPTION The TMPA2155DS is a stereo class-D audio power amplifier IC. With BTL(Bridge-Tied-Load) configuration, it delivers up to 2.7W/ch(5.4W in all) into a 3 ohm load or 2.3W/ch(4.6W in all) into a 4 ohm load or 1.5W/ch(3W in all) into an 8 ohm load. No external heat-sink is required. ♦ 2.2mA / Ch 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 / Ch Shutdown Current ♦ Pop-less Power-Up, Shutdown and Recovery ♦ Differential 250 KHz PWM Allows Bridge-Tied Load to Doubles Output Power and Eliminates LC Output Filter ♦ Thermal Shutoff and Automatic Recovery 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 Outputs, Short to VCC, Short to Ground) information is embedded in PWM （ Pulse Width Modulation ） . DataSheet4U.com ♦ Differential Signal Processing Improves CMRR ♦ Compatible with earphone application ♦ Output Pin Short-Circuit Protection (Short to Other FEATURES ♦ 2.5V to 6V Single Supply ♦ Up to 2.7W / Ch at 5V, 3 ohms ♦ Up to 85% Power Effi...