TDA7263 Datasheet, PDF (6/8 Pages) STMicroelectronics – 12+12W STEREO AMPLIFIER WITH MUTING

TDA7263
BUILT-IN PROTECTION SYSTEMS
THERMAL SHUT-DOWN
The presence of a thermal limiting circuit offers
the following advantages:
1-an overload on the output (even if it is perma-
nent), or an excessive ambient temperature
can be easily withstood.
2-the heatsink can have a smaller factor of
safety compared with that of a conventional
circuit. There is no device damage in the case
of excessive junction temperature; if for any
reason the junction temperature increases up
to 145°C. the thermal shutdown simply re-
duces the output power and therefore the
power dissipation.
The maximum allowable power dissipation de-
pends upon the thermal resistance junction-ambi-
ent. Figure 8 shows the dissipable power as a
function of ambient temperature for different
heatsink thermal resistance.
SHORT CIRCUIT (AC CONDITIONS)
The TDA7263 can withstand accidental short cir-
cuits across the speaker made by a wrong con-
nection during normal play operation.
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