OB3677
100/120Hz current ripple removing driver
GENERAL DESCRIPTION
OB3677 is a low system cost driver to
remove/suppress the 100/120 Hz current ripple for
LED lighting applications.
OB3677 integrates a NMOSFET and the output
current is suggested less than 150mA.
OB3677 can be used in traditional and dimming
LED lighting application.
OB3677 is offered in SOT23-3, SOT-89-3, and
CPC-4 package.
FEATURES
Driver for 100/120Hz current ripple
removal/suppress
Low system cost
Little volume
Supports wide dimming range: 0%-100%
SOT23-3/SOT-89/CPC-4 Package
APPLICATIONS
LED lighting
TYPICAL APPLICATION
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OB3677
DRAIN
GATE
GND
Confidential
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Preliminary Datasheet
OB_DOC_DS_367700
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©On-Bright Electronics
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OB3677
100/120Hz current ripple removing driver
GENERAL INFORMATION
Pin Configuration Pin Configuration
Ordering Information
Part Number
Description
SOT23-3, Halogen-free in
OB3677MDP
Tube
SOT23-3, Halogen-free in
OB3677MDPA
T&R
SOT89-3
，
Halogen-free in
OB3677MPP
Tube
SOT89-3
，
Halogen-free in
OB3677MPPA
T&R
OB3677KDP
CPC-4，Halogen-free in Tube
OB3677KDPA
CPC-4，Halogen-free in T&R
Note:
All Devices are offered in Halogen-free Package if not
otherwise noted.
GND
2
GND
DRAIN
3
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fid
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GATE
1
Package Dissipation Rating
Package
RθJA (℃/W)
SOT23-3
210
SOT89-3
130
CPC-4
160
Recommended Operating Condition
Symbol Parameter
Range
V
Drain
V
Drain
Voltage Ripple
<12V
Absolute Maximum Ratings
Parameter
DRAIN Voltage
GT Voltage
Min/Max Operating Junction
Temperature T
J
Operating Ambient
Temperature T
A
Min/Max Storage
Temperature T
stg
Lead Temperature
(Soldering, 10secs)
Value
-0.3 V to 40V
-0.3 V to 7V
-40 to 150
℃
-40 to 85
℃
-55 to 150
℃
260
℃
DRAIN
ig
1
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Pin map for SOT-89 package
4
GND
Br
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GATE
2
3
GND
O
Pin map for CPC-4 package
Output Power Table
Product
OB3677MDP
OB3677KDP
Package
SOT-23-3
CPC-4
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Note:
Stresses beyond those listed under “absolute maximum
ratings” may cause permanent damage to the device. These
are stress ratings only, functional operation of the device at
these or any other conditions beyond those indicated under
“recommended operating conditions” is not implied. Exposure
to absolute maximum-rated conditions for extended periods
may affect device reliability.
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Condition
Pin map for SOT23-3 package
o
I
o
<150mA, V
drain
<12V
I
o
<150mA, V
drain
<12V
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Max Power Dissipation
400mW
460mW
OB3677MPP
SOT-89
I
o
<150mA, V
drain
<12V
600mW
Note:
Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50℃
ambient
and 60℃ temperature rise. Higher output power is possible with extra added heat sink、air circulation and decrease output current to
reduce thermal resistance.
©On-Bright Electronics
Preliminary Datasheet
OB_DOC_DS_367700
OB3677
100/120Hz current ripple removing driver
Marking Information
OB3677
X
X
X
MD:SOT23-3
MP:SOT89-3
KD:CPC-4
P:Halogen-
free
Y:Year Code
WW:Week Code(01-52)
ZZZ: Lot code
s: Internal code
677YWW
. ZZZ s
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Y:Year Code
WW:Week Code(01-52)
ZZZ: Lot code
s: Internal code
©On-Bright Electronics
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Y:Year Code
WW:Week Code(01-52)
ZZZ: Lot code
s: Internal code
Confidential
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Preliminary Datasheet
OB_DOC_DS_367700
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677YWW
. ZZZ s
677YWW
. ZZZ s
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100/120Hz current ripple removing
driver
Package
Package
Halogen-free
Packing
Blank:Tube
A: Tape/Reel
OB3677
100/120Hz current ripple removing driver
TERMINAL ASSIGNMENTS for SOT23-3 Package Parts
Pin Num
Pin Name
I/O
Description
1
2
3
GATE
DRAIN
GND
I/O
P
P
Gate of internal NMOSFET
Drain of internal NMOSFET
Ground
TERMINAL ASSIGNMENTS for SOT-89 Package Parts
Pin Num
Pin Name
I/O
Description
3
DRAIN
P
Drain of internal NMOSFET
Pin Num
Pin Name
I/O
Description
1
2
3,4
DRAIN
GATE
GND
P
I/O
P
Drain of internal NMOSFET
Gate of internal NMOSFET
Ground
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©On-Bright Electronics
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TERMINAL ASSIGNMENTS for CPC-4 Package Parts
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Preliminary Datasheet
OB_DOC_DS_367700
2
GND
P
Ground
o
1
GATE
I/O
Gate of internal NMOSFET
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OB3677
100/120Hz current ripple removing driver
BLOCK DIAGRAM
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Confidential
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Preliminary Datasheet
OB_DOC_DS_367700
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