TDA7265SA 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

TDA7265SA

18W+18W STEREO AMPLIFIER WITH MUTE & ST-BY

STMicroelectronics 

TDA7265SA

Pdmax = 2 · ( 7.7 ) + 1.0 = 16 W

(Heat Sinker)

RTh c-a

=

1----5---0-----–----T----a---m-----b----m----a---x-

Pd max

–

RTh

j-c

=

1----5---0-----–-----5---0-- – 3

16

=

3.25 ° C /W

In figure 20 is shown the Power derating curve for the device.

Figure 20. Power derating curve

35

30

25

20

15

10

5

0

0

(b)

(a)

(c)

a) Infinite Heatsink

b) 1.5 °C/ W

c) 3.0 °C/ W

40

80

120

160

Tamb (°C)

7 CLIPWATT ASSEMBLING SUGGESTIONS

The suggested mounting method of Clipwatt on external heat sink, requires the use of a clip placed as much as

possible in the plastic body center, as indicated in the example of figure 21.

A thermal grease can be used in order to reduce the additional thermal resistance of the contact between pack-

age and heatsink.

A pressing force of 7 - 10 Kg gives a good contact and the clip must be designed in order to avoid a maximum

contact pressure of 15 Kg/mm2 between it and the plastic body case.

As example, if a 15Kg force is applied by the clip on the package, the clip must have a contact area of 1mm2

at least.

Figure 21. Example of right placement of the clip

9/12

Share Link: