TDA2004R

Application suggestion

Doc ID 17614 Rev 2

13/17

Figure 19.

Suggested LC network circuit

Figure 20.

Voltage gain bridge configuration

3.1.2

Short circuit (AC condition)

The TDA2004R can withstand a permanent short-circuit from the output to ground caused

by a wrong connection during normal working.

3.1.3

Polarity inversion

High current (up to 10 A) can be handled by the device with no damage for a longer period

than the blow-out time of a quick 2 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.

3.1.4

Open ground

When the ratio is in the ON condition and the ground is accidentally opened, a standard

audio amplifier will be damaged. On the TDA2004R protection diodes are included to avoid

any damage.

3.1.5

Inductive load

A protection diode is provided to allow use of the TDA2004R with inductive loads.

3.1.6

DC voltage

The maximum operating DC voltage for the TDA2004R 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 are series connected to crank the engine.

FROM

SUPPLY

LINE

L = 2mH

A

C

TO PIN

3000 µF

16V

Vs (V)

40

t1

t1 = 50ms

t2 = 1000ms

t2

t

14.4