13/20

TDA7563

Figure 21. Thermal Foldback Diagram

A correct turn on/off sequence respectful of the diagnostic timings and producing no audible noises could be as

follows (after battery connection):

TURN-ON: PIN2 > 7V --- 10ms --- (STAND-BY OUT + DIAG ENABLE) --- 500 ms (min) --- MUTING OUT

TURN-OFF: MUTING IN --- 20 ms --- (DIAG DISABLE + STAND-BY IN) --- 10ms --- PIN2 = 0

disappear).

high-offset message disappears).

Tj ( °C)

TH. SH.

START

TH. SH.

END

Vout

TH. WARN.

ON

Tj ( °C)

Vout

Tj ( °C)

signal)

CD out