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STA559BW датащи(PDF) 63 Page - STMicroelectronics

номер детали STA559BW
подробное описание детали  Selectable 32- to 192-kHz input sample rates
PDF  67 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA559BW датащи(HTML) 63 Page - STMicroelectronics

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STA559BW
Package thermal characteristics
67
8
Package thermal characteristics
Using a double-layer PCB the thermal resistance, junction to ambient, with 2 copper ground
areas of 3 x 3 cm2 and with 16 via holes 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.
Thus, the maximum estimated dissipated power for the STA559BW is:
Figure 20 shows the power derating curve for the PowerSSO-36 package on PCBs with
copper areas of 2 x 2 cm2 and 3 x 3 cm2.
Figure 20. PowerSSO-36 power derating curve
2 x 20 W @ 8
, 18 V
Pd max is approximately 4 W
2 x 9 W + 1 x 20 W @ 4
, 8 ,18 V
Pd max is approximately 5 W
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Pd (W)
Tamb ( °C)
Copper Area 2x2 cm
and via holes
STA339BW
PSSO36
Copper Area 3x3 cm
and via holes
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Pd (W)
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and via holes
STA339BW
PSSO36
Copper Area 3x3 cm
and via holes
STA559BW
PowerSSO-



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