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STA333W Datasheet(PDF) 38 Page - STMicroelectronics

Part # STA333W
Description  2-channel high-efficiency digital audio system
PDF  42 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA333W Datasheet(HTML) 38 Page - STMicroelectronics

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Package thermal characteristics
STA333W
38/42
9
Package thermal characteristics
A thermal resistance of 25° C/W can be achieved using a ground copper area of 3 x 3 cm,
and using 16 vias, on the PCB (see Figure 15). The amount of power dissipated within the
device depends primarily on the supply voltage, load impedance and output modulation
level.
The max estimated dissipated power for the STA333W is 3 W. This gives, with the
suggested board copper area, a maximum
∆Tj of 75 °C. This gives a safety margin before
the thermal protection intervention is invoked (Tj = 150 °C) in consumer environments where
a 50 °C is the maximum ambient temperature.
Figure 15.
Thermal characteristics



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