TDA6108AJF Datasheet, PDF (5/16 Pages) NXP Semiconductors – Triple video output amplifier

Philips Semiconductors
TDA6108AJF
Triple video output amplifier
8. Thermal characteristics
Table 4:
Symbol
R_th(j-a)
R_{th(j-fin)}
Thermal characteristics
Parameter
thermal resistance from junction
to ambient
thermal resistance from junction
to fin
Conditions
in free air
[1] An external heatsink is necessary; see Application Note AN10227-01.
Typ
56
[1] ₁₁
Unit
K/W
K/W
8
P_tot
(W)
(1)
6
mbh989
4
(2)
2
0
−40
0
(1) Infinite heatsink.
(2) No heatsink.
Fig 4. Power derating curve
40
80
120
160
T_amb (°C)
8.1 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).
outputs
5 K/W
thermal protection circuit
6 K/W
fin
mgk279
Fig 5. Equivalent thermal resistance network
9397 750 14729
Product data sheet
Rev. 03 — 20 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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