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Features
■ Improved performance over the TDA2002 (pin-
to-pin compatible)
■ Very low number of external components
■ Ease of assembly
■ Cost and space savings
TDA2003A
10 W car radio audio amplifier
Datasheet − production data
Description
The TDA2003A is capable of providing a high
output current (up to 3.5 A) with very low
harmonic and crossover distortion.
Completely safe operation is guaranteed due to
DC and AC short-circuit protection between all
pins and ground, a thermal limiting circuit, load
dump voltage surge protection up to 40 V and
protection diodes in case of accidental open
ground.
Table 1. Device summary
Order code Package Packing
TDA2003AV Pentawatt (vertical) Tube
TDA2003AH Pentawatt (horizontal) Tube
Pentawatt Pentawatt
(vertical) (horizontal)
July 2012 Doc ID 018796 Rev 4 1/19
This is information on a product in full production.
www.st.com
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Contents TDA2003A
Contents
1 Schematic, test circuits and pin connections . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Built-in protection systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Load dump voltage surge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 Short-circuit (AC and DC conditions) . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.3 Polarity inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.4 Open ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.5 Inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.6 DC voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.7 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Practical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.1 Printed circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.2 Assembly recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.3 Application recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19 Doc ID 018796 Rev 4
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TDA2003A List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Recommended values of the components of a bridge application circuit . . . . . . . . . . . . . . 15
Table 6. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 018796 Rev 4 3/19
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List of figures TDA2003A
List of figures
Figure 1. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. DC test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. AC test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 4. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. Quiescent drain current vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 7. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8. Output power vs. load resistance R
Figure 9. Gain vs. input sensitivity (RL = 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10. Gain vs. input sensitivity (R
= 2 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
L
Figure 11. Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12. Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13. Supply voltage rejection vs. voltage gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 15. Power dissipation and efficiency vs. output power (R
Figure 16. Power dissipation and efficiency vs. output power (R
Figure 17. Maximum power dissipation vs. supply voltage (sine wave operation). . . . . . . . . . . . . . . . 11
Figure 18. Maximum allowable power dissipation vs. ambient temperature . . . . . . . . . . . . . . . . . . . . 11
Figure 19. Typical values of capacitor (C
Figure 20. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 21. Printed circuit board and component layout for typical application circuit. . . . . . . . . . . . . . 12
Figure 22. Voltage gain bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 23. Suggested LC network circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 24. Output power and drain current vs. case temperature (R
Figure 25. Output power and drain current vs. case temperature (R
Figure 26. Pentawatt (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . 16
Figure 27. Pentawatt (horizontal) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 17
L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
= 4 Ω) . . . . . . . . . . . . . . . . . . . . . . 10
L
= 2 Ω) . . . . . . . . . . . . . . . . . . . . . . 10
L
) for different values of frequency response (B). . . . . . . . . 11
X
= 4 Ω) . . . . . . . . . . . . . . . . . . . 14
L
= 2 Ω) . . . . . . . . . . . . . . . . . . . 14
L
4/19 Doc ID 018796 Rev 4
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TDA2003A Schematic, test circuits and pin connections
1 Schematic, test circuits and pin connections
Figure 1. Schematic diagram
Figure 2. DC test circuit
Figure 3. AC test circuit
Doc ID 018796 Rev 4 5/19
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Schematic, test circuits and pin connections TDA2003A
Figure 4. Pin connections (top view)
6/19 Doc ID 018796 Rev 4