TMPA2155DS Datasheet, PDF (1/14 Pages) List of Unclassifed Manufacturers – 2.7W/CH STEREO CLASS-D AUDIO POWER AMPLIFIER

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
FEATURES
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.
♦ 2.5V to 6V Single Supply
♦ Up to 2.7W / Ch at 5V, 3 ohms
♦ Up to 85% Power Efficiency
♦ Automatic output power control (APC)
♦ 2.2mA / Ch Quiescent Current at 5V
For multiple-input applications, independent gain control and
corner frequency can be implemented by summing the input
♦ Less Than 0.2uA / Ch Shutdown Current
♦ Pop-less Power-Up, Shutdown and Recovery
sources through resistor ratio and input capacitor values.
♦ Differential 250 KHz PWM Allows Bridge-Tied Load to
Automatic voltage gain control makes the best use of battery.
Doubles Output Power and Eliminates LC Output Filter
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）.
♦ Thermal Shutoff and Automatic Recovery
♦ Compatible with earphone application
♦ Output Pin Short-Circuit Protection (Short to Other
Outputs, Short to VCC, Short to Ground)
♦ Differential Signal Processing Improves CMRR
APPLICATIONS
Multimedia application includes Cellular Phones, PDAs,
DVD/CD players, TFT LCD TVs/Monitors, 2.1 channel/5.1
channel audio systems, USB audio. It is also ideal for other
portable devices like Wireless Radios.
Package
TSSOP20, QFN24 Available
For best performance, please refer to
http://www.taimec.com.tw/English/EVM.htm
http://www.class-d.com.tw/English/EVM.htm
for PCB layout.
REFERENCE CIRCUIT（Please refer to TMPA002.APP for application）
Copyright©2005, Tai-1 Microelectronics Corp.
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