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TDA6108AJF

Triple video output amplifier

NXP Semiconductors. 

Philips Semiconductors

TDA6108AJF

Triple video output amplifier

8. Thermal characteristics

Table 4:

Symbol

Rth(j-a)

Rth(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

Ptot

(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

Tamb (°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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