The TDA2003 is a 10W car radio audio amplifier with improved performance and the same pin configuration as the TDA2002. It has a very low number of external components, ease of assembly, space and cost saving. The device provides a high output current capability (up to 3.5A) and very low harmonic and crossover distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit, thermal over-range, load dump voltage surge up to 40V, and fortuitous open ground.
The TDA2003 is a 10 W car‑radio audio amplifier with a pin‑compatible design to the TDA2002. It offers high output current capability (up to 3.5 A) and low harmonic distortion, making it suitable for automotive audio applications. The device includes built‑in protection against short circuits, thermal overload, load‑dump voltage surges and open‑ground conditions.
Key specifications include a DC supply voltage rating of 28 V, an operating supply voltage of 18 V, a maximum power dissipation of 20 W, and an output power of up to 10 W into a 2 Ω load. The amplifier operates over a frequency range of 40 Hz to 15 kHz (‑3 dB) and features a junction‑case thermal resistance of 3 °C/W.
| DC supply voltage (max) | 28 V |
|---|---|
| Operating supply voltage | 18 V |
| Output peak current (repetitive) | 3.5 A |
| Power dissipation at Tcase=90 °C | 20 W |
| Junction temperature range | -40 °C to 150 °C |
| Thermal resistance junction‑case (max) | 3 °C/W |
| Quiescent output voltage (typ) | 6.9 V |
| Quiescent drain current (typ) | 50 mA |
| Efficiency at 10 W | 65 % |
| Frequency response (‑3 dB) | 40 Hz to 15 kHz |
The device can tolerate a peak supply voltage of 40 V for 50 ms and a DC supply voltage up to 28 V.
The recommended operating supply voltage is 18 V.