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PDF TMPA2155DS Data sheet ( Hoja de datos )
| Número de pieza | TMPA2155DS | |
| Descripción | 2.7W/CH STEREO CLASS-D AUDIO POWER AMPLIFIER | |
| Fabricantes | ETC | |
| Logotipo |  |
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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
♦ Thermal Shutoff and Automatic Recovery
Analog input signal is converted into digital output which ♦ Compatible with earphone application
drives directly to the speaker. High power efficiency is
♦ Output Pin Short-Circuit Protection (Short to Other
achieved due to digital output at the load. The audio
Outputs, Short to VCC, Short to Ground)
information is embedded in PWM（Pulse Width ModuDlaattioanS）h. eet4U.com
♦ 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
DataShee
for PCB layout.
REFERENCE CIRCUIT（Please refer to TMPA002.APP for application）
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Copyright©2005, Tai-1 Microelectronics Corp.
DatPaSDhFeect4reUa.tceodmwith pdfFactory trial version www.pdffactory.com
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Tai-1 Microelectronics
www.taimec.com.tw / www.class-d.com.tw
Preliminary
TMPA2155DS
Rev.1.0 June 27, 2006
APPLICATION INFORMATION
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Tai-1 Microelectronics
www.taimec.com.tw / www.class-d.com.tw
Preliminary
TMPA2155DS
Rev.1.0 June 27, 2006
Over current protection
A current detection circuit is built in the device to detect the switching current of the output
stages of the device. It disables the device when the current is beyond about 3.5amps. It
protects the device when there is an accident short between outputs or between output and
power/gnd pins. It also protects the device when an abnormal low impedance is tied to the
output. High current beyond the specification may potentially causes electron migration and
permanently damage the device. Shutdown or power down is necessary to resolve the
protection situation. There is no automatic recovery from over current protection.
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Copyright©2005, Tai-1 Microelectronics Corp.
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| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TMPA2155DS.PDF ] | |
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