Stereo power audio amplifier circuit tda2009 10 + 10 watts

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The TDA2009A is class AB dual Hi-Fi Audio power amplifier assembled in Multiwatt package, specially designed for high quality stereo application as Hi-Fi and music centers.

Characteristics

  • High output power
  • (10 + 10w min. @ d = 1%)
  • High current capability (up to 3.5a)
  • Ac short circuit protection
  • Thermal overload protection
  • Space and cost saving : very low
  • Number of external components
  • And simple mounting thanks to the
  • Multiwatt package.

Build-in protection systems
Thermal shut-down
The presence of a thermal limiting circuit offers the following advantages:
1) an averload on the output (even if it is permanent), or an excessive ambient temperature can be easily withstood.

2) the heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature : all that
happens is that Po (and therefore Ptot) and Io are reduced.

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The maximum allowable power dissipation depends upon the size of the external heatsink (i.e.its thermal resistance);

Short circuit (AC Conditions).
The TDA2009A can withstand an accidental short circuit from the output and ground made by a wrong connection during normal play operation.

Mounting instructions
The power dissipated in the circuit must be removed by adding an external heatsink.
Thanks to the MULTIWATT
package attaching the heatsink is very simple, a screw or a compression spring (clip) being sufficient. Between the heatsinkand thepackage it isbetter to insert a layer of silicon grease, to optimize the thermal contact, no electrical isolation is needed between the two.

Schematic of the power sound amplifier stereo with tda2009

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tda2009 power amplifier schematic

Suggestion of assembly of the amplifier stereo with tda2009

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tda2009 power amplifier PCB
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TDA2009 PCB

Information for tda2009

The power source is simple from 12 to 18 volts max. with current of 2 amperes.

It lists of components for assembly of the amplifier stereo with tda2009

Part List

Components Value
Capacitors
C1, C2 2.2µ Capacitor electrolytic
C3 22u Capacitor electrolytic
C4, C5 220u Capacitor electrolytic
C6 100u Capacitor electrolytic
C7, C8, C9 100n Capacitor polyester – 104 , 100n or 0.1
C10, C11 2200u Capacitor electrolytic
Semiconductors
IC1 TDA2009
Connectors
IN-L Terminal block connector 2 screws – Left Audio input
IN-R Terminal block connector 2 screws – Right Audio input
OUT-L Terminal block connector 2 screws – Left Audio Output
OUT-R Terminal block connector 2 screws – Right Audio Output
VCC Terminal block connector 2 screws – Power supply connector
J2 Jumper 12mm
J3 Jumper 12mm
Miscellaneous Printed Circuit Board, Welding, Wires, Box, etc.
Resistors
R1, R3 1k3 Value not commercial, use 1k2 – Black, Red, Red, Gold
R2, R4 18 Ohms – Brown, Gray, Black, Gold
R5, R6 1 Ohms – Brown, Black, Gold, Gold

All capacitor voltage
Power supply >=18V = Capacitors 25V
Power supply <=19V capacitors 35V

Datasheet TDA2009

Download files for this assembly – PDF PCB, Schematic,PDF, silk screen, TDA2009 and Datasheet.

Download PDF

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2 thoughts on “Stereo power audio amplifier circuit tda2009 10 + 10 watts”

  1. Sir Good Day, I build this project, but It did’nt work. please help me how to do it. my pcb layout was correct and schematics also. can you show me a finished and working hardware of this circuit please? thanks in advance

    Reply

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Crash Course Electronics and PCB Design
Crash Course Electronics and PCB Design
DC circuits, operational amplifiers, EXERCISES, SIMULATIONS
DC circuits, operational amplifiers, EXERCISES, SIMULATIONS