tda2003a STMicroelectronics, tda2003a Datasheet - Page 13

• Manufacturer Part Number: tda2003a
• Description: 10 W Car Radio Audio Amplifier
• Manufacturer: STMicroelectronics

TDA2003A
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
Figure 22. Voltage gain bridge configuration
Figure 23. Suggested LC network circuit
Short-circuit (AC and DC conditions)
The TDA2003A can withstand a permanent short-circuit on the output for a supply voltage
up to 16 V.
Polarity inversion
High current (up to 5 A) can be handled by the device with no damage for a longer period
than the blow-out time of a quick 1 A fuse (normally connected in series with the supply).
This feature is added to avoid destruction if, during fitting to the car, a mistake on the
connection of the supply is made.
Open ground
When the radio is in the ON condition and the ground is accidentally opened, a standard
audio amplifier will be damaged. On the TDA2003A, protection diodes are included to avoid
any damage.
Inductive load
A protection diode is provided between pin 4 and 5 (see the internal schematic diagram) to
allow use of the TDA2003A with inductive loads. In particular, the TDA2003A can drive a
coupling transformer for audio modulation.
DC voltage
The maximum operating DC voltage on the TDA2003A is 18 V, however the device can
withstand a DC voltage up to 28 V with no damage. This could occur during winter if two
batteries were connected in series to crank the engine.
Doc ID 018796 Rev 1
Application information
13/19