TDA2822
Figure 14 : Application Circuit for PortableRadios.
MOUNTING INSTRUCTION
TheRth j-amb of theTDA2822 can be reducedbysol-
deringthe GND pins toa suitablecopperarea of the
printed circuit board (Figure 15) or to an external
heatsink(Figure 16).
During soldering the pins temperature must not ex-
ceed 260 °C and the soldering time must not be
longer than 12 seconds.
The externalheatsink or printed circuit copper area
must be connected to electrical ground.
The diagram of Figure 17 shows the maximum dis-
sipable power Ptot and the Rth j-amb as a functionof
theside ”∂” oftwoequalsquarecopperareashaving
a thickness of 35 µ (1.4 mils).
Figure 15 : Example of P.C. Board Copper Area
Figure 16 : ExternalHeatsink Mounting Example.
which is used as Heatsink.
8/11