SI-8000TM データシートの表示（PDF） - Sanken Electric co.,ltd.
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SI-8000TM Datasheet PDF : 15 Pages
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DC/DC Step-Down Converter IC
SI-8000TM Series
September 2005
4-2 Power Dissipation
SI-8000TM
Series Power
Tjmax=125℃
Dissipation
PD = VO
⋅
IO
⎜⎜⎝⎛
100
ηx
− 1⎟⎟⎠⎞
− VF
⋅
IO ⎜⎜⎝⎛1 −
VO
VIN
⎟⎟⎠⎞
copper area
Glass‐epoxy board mounting in 30×30 ㎜
copper area
copper area
VO: Output voltage
VIN: Input voltage
IO: Output current
ηx: Efficiency（％）
VF: Diode forward
voltage
SFPB66･･0.5V
(IO=1.5A)
copper area
copper area
copper area
Ambient Temperature Ta [℃]
Note1：As the efficiency varies subject to the input voltage and output current, it shall be obtained
from the efficiency curve in page 4 and substituted in percent.
Note2：Thermal design for Di shall be made separately.
Sanken Electric Co.,Ltd.
6/15
I02-001EA-050910
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