TMPA221DS Datasheet, PDF (1/17 Pages) List of Unclassifed Manufacturers – 2.7W + 0.6W x 2 2.1 Channel CLASS-D AUDIO POWER AMPLIFIER

tai'mec
Preliminary
www.taimec.com.tw / www.class-d.com.tw
TMPA221DS
Rev.1.0 December 24,
2007
2.7W + 0.6W x 2 2.1 Channel CLASS-D AUDIO POWER AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The TMPA221DS is a 2.1 channel stereo & bass class-D audio
power amplifier IC. It delivers up to 2.7W (bass) and
0.6W(right/left channel each) into 3 ohm loads. The bass
output is designed as BTL (Bridge-Tied-Load) for high output
power. The right & left channels are designed as SE
(Single-Ended). The power efficiency can be up to 82% for 8
ohm load. No external heat-sink is required.

♦ 2.5V to 6V Single Supply
♦ Integrated 2.1 channel power amplifiers in one chip
♦ Up to 2.7W(bass)+ 0.6W(right/left Ch) at 5V, 3 ohms
♦ Up to 82% Power Efficiency
♦ Automatic output power control (APC)
♦ Total 4.4mA Quiescent Current at 5V
♦ Less Than 0.4uA Shutdown Current

The internal de-pop circuitry eliminates pop noise at
power-up & shutdown operations.
Automatic power gain
control makes the best use of battery.

Analog input signal is converted into digital output which
drives directly the speaker. High power efficiency is
achieved due to digital output at the load. The audio
information is embedded in PWM€Pulse Width Modulation.
♦ Pop-less Power-Up, Shutdown and Recovery
♦ 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
Package
APPLICATIONS
TSSOP20 Available, pb freeŒRoHS
For best performance, please refer to
Multimedia application includes Cellular Phones, PDAs, ^{http://www.taimec.com.tw/English/EVM.htm}
DVD/CD players, 2.1 channel audio systems, USB audio. It _{http://www.class-d.com.tw/English/EVM.htm}
is also ideal for other portable devices like Wireless Radios.
for PCB layout.
REFERENCE CIRCUIT€Please refer to TMPA002.APP for application
Copyright©2005, Tai-1 Microelectronics Corp.
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