SD16729 Silan Microelectronics Joint-stock, SD16729 Datasheet - Page 10

• Manufacturer Part Number: SD16729
• Description: 16-BIT CONSTANT CURRENT LED DRIVER
• Manufacturer: Silan Microelectronics Joint-stock

ELECTRICAL CHARACTERISTIC CURVE
Power dissipation (PD)
Max. power dissipation is given by: P
ON is expressed as: P
Hence, to make P
I
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
OUT
I
Where, V
OUT
I
OUT
={[(T
is given by:
= (V
j
-T
R-EXT
R-EXT
a
)/ R
is voltage of R
th(j-a)
D(act
/R
EXT
]-(I
D(act)
)≤ P
)×15.2; V
DD
D(max)
=(I
x V
DD
-EXT
DD
, output current and duty cycle should be:
x V
R-EXT
) }/V
, and R
DD
D(max)
CE
)+(I
=1.202V
/Duty/16, where T
OUT
EXT
=(T
j
-T
x Duty x V
is the resistance of resistor connected to R
a
)/R
th(j-a)
CE
and actual power dissipation when 16 channel are all
j
=150°C.
x16).
REV:1.1
-EXT
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.
SD16729
Page 10 of 14
2009.03.10