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STA335BW Datasheet(PDF) 51 Page - STMicroelectronics

Part # STA335BW
Description  2.1 channels high efficiency digital audio system
PDF  54 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA335BW Datasheet(HTML) 51 Page - STMicroelectronics

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STA335BW
Package thermal characteristics
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6
Package thermal characteristics
Using a double layer PCB the thermal resistance junction to ambient with 2 GND copper
area of 3x3 cm and with 16 via holes (see Figure 12) is 24 °C/W in natural air convection.
The dissipated power within the device depends primarily on the supply voltage, load
impedance and output modulation level.
The max estimated dissipated power for the STA335BW is:
Figure 12.
Double layer PCB Rth j-amb with 2 GND copper area and with 16 via holes
Figure 13 shows the Power Derating curve for the PSSO36 package with two copper areas
on board 2 x 2 cm and 3 x 3 cm.
Figure 13.
PSSO36 power derating curve
2 x 20 W @ 8
Ω, 18 V
Pd max ~ 4 W
2 x 10 W + 1 x 20 W @ 4
Ω, 8 Ω, 18 V
Pd max < 5 W
2 x 15 W @ 16
Ω, 24 V
Pd max ~ 3 W
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Pd (W)
Tamb ( °C)
Copper Area 2x2 cm
and via holes
STA335BW
PSSO36
Copper Area 3x3 cm
and via holes



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