Philips TDA6107JF - Manual (Page 5)

2002 Oct 18 5
Philips Semiconductors Product specification
Triple video output amplifier TDA6107JF
THERMAL CHARACTERISTICS
Note
1. An external heatsink is necessary.
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
th(j-a)
thermal resistance from junction to ambient 56 K/W
R
th(j-fin)
thermal resistance from junction to fin note 1 11 K/W
R
th(h-a)
thermal resistance from heatsink to ambient 18 K/W
Thermal protection
The internal thermal protection circuit gives a decrease of
the slew rate at high temperatures: 10% decrease at
130
°
C and 30% decrease at 145
°
C (typical values on the
spot of the thermal protection circuit).
handbook, halfpage
−
40
Ptot
(W)
0
8
6
2
0
4
40 80 160 120
Tamb (
°
C)
MBH989
(1)
(2)
Fig.3 Power derating curves.
(1) Infinite heatsink.
(2) No heatsink.
handbook, halfpage
MGK279
5 K/W
outputs
fin
thermal protection circuit
6 K/W
Fig.4 Equivalent thermal resistance network.