TDA2003 データシートの表示（PDF） - Tiger Electronic

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TDA2003

10W CAR RADIO AUDIO AMPLIFIER

Tiger Electronic 

TDA2003

BUILT-IN PROTECTION SYSTEMS

Load dump voltage surge

The TDA2003 has a circuit which enables it to withstand a voltage pulse train, on pin 5, of the

type shown in Fig. 2. If the supply voltage peaks to more than 40V, then an LC filter must

be inserted between the supply and pin 5, in order to assure that the pulses at pin 5 will be

head within the limits shown in Fig.1.

A suggested LC network is shown in Fig.2.With this network, a train of pulses with

amplitude up to 120V and width of 2ms can be applied at point A. This type of protection is

ON when the supply voltage (pulsed or DC) exceeds 18V.For this reason the maximum

operating supply voltage is 18V.

Figure 1

Figure 2

Short Circuit (AC and DC Conditions )

The TDA2003 can withstand a permanent short-circuit on the output for a supply voltage up to

16V.

Polarity inversion

High current (up to 5A) can be handled by the device with no damage for a longer period

than the blow-out time of a quick 1A fuse(normally connected in series with the supply).

The feature is added to avoid destruction if, during fitting to the car, a mistake on

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 TDA2003 protection diodes are included to avoid any

damage.

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