OB3663 Datasheet PDF - On-Bright

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OB3663
On-Bright

Part Number OB3663
Description Dimmable Flyback PSR Controller
Page 12 Pages


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OB3663
Dimmable Flyback PSR Controller
GENERAL DESCRIPTION
The OB3663 is a high performance single stage
AC/DC fly-back controller for dimmable LED
luminaires. The OB3663 integrates advanced
digital processing core to eliminate visible flicker.
OB3663 offers fast startup feature, constant
on-time control for power factor correction (PFC),
zero current detector (ZCD) to ensure transition
mode (TM) operation, and accurate current
regulation.
OB3663 offers comprehensive protection
coverage including VDD under voltage lockout
(UVLO), VDD over voltage protection, load voltage
over voltage protection, cycle-by-cycle current
limiting, over temperature protection, LED string
open/short protection, driver output clamping for
external power MOSFET protection, current sense
resistor short protection, and transformer
saturation protection.
OB3663 is offered in SOP14 package (OB3663CP)
and SSOP10 package (OB3663LP) .
FEATURES
Primary-Side Control with Single Stage PFC
Topology
No visible flicker
No bleeder design
Total harmonic distortion <20% with PF>0.9
Fast startup time (<0.5s without dimmer)
Transition Mode (TM) operation to achieve
high efficiency
High current accuracy
Source driving operation mode
Cycle-by-Cycle Current Limiting (OCP)
VDD Over Voltage Protection
Output Over Voltage Protection
Over-Temperature Protection
VDD Under Voltage Lockout (UVLO)
LED string open protection
LED string short protection
Current sense resistor short/open protection
Transformer saturation protection
APPLICATIONS
Dimmable LED lighting
©On-Bright Electronics
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Preliminary Datasheet
OB_DOC_DS_366304



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TYPICAL APPLICATION
OB3663
Dimmable Flyback PSR Controller
OB3663
1 PHASE
2 REF
SD 14
BL 13
3 NC
I_DET 12
4 CS
GND 11
AC
5 NC
COMP 10
6 SW
7 GATE
FB 9
VDD 8
Figure1: OB3663CP Typical Application Schematic
Figure2: OB3663LP Typical Application Schematic
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Preliminary Datasheet
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GENERAL INFORMATION
Package Dissipation Rating
Package
RθJA (/W)
SOP14
90
SSOP10
138
Ordering Information
Part Number
Description
OB3663CP
SOP14, Pb free in Tube
OB3663CPA
SOP14, Pb free in T&R
OB3663LP
SSOP10, Pb free in Tube
OB3663LPA
SSOP10, Pb free in T&R
Note1: All Devices are offered in Pb-free Package if not
otherwise noted.
OB3663
Dimmable Flyback PSR Controller
Absolute Maximum Ratings
Parameter
VDD Input Voltage to GND
GATE to GND
SW to GND
FB to GND
COMP, REF and CS to GND
PHASE,I_DET, BL, SD,PD,OPT
Operating Ambient Temp. TA
Operating Junction Temp. TJ
Min/Max Storage Temp. Tstg
Lead Temp. (10 Sec)
Value
-0.3V to 24V
-0.7V to 24V
-0.7V to 20V
-0.7V to 7V
-0.7V to 7V
-0.7V to 5V
-40 ~85
-40 ~150
-55 ~150
260
Note2: 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.
Marking Information
©On-Bright Electronics
YWWZZZ
OB3663L P
S
Y:Year Code
WW:Week Code(01-52)
ZZZ:Lot Code
L:SSOP10 Package
P:Pb-free Package
S:Internal Code(Optional)
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Preliminary Datasheet
OB_DOC_DS_366304



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Pin Configuration for OB3663
OB3663
Dimmable Flyback PSR Controller
SOP14
SSOP10
Terminal Assignment for OB3663CP
Number Pin Name I/O Pin Function
1
PHASE
I/O
Phase detect pin. The line voltage is connected to this pin through a
resistor divider, to detect when the TRIAC is on and off.
2 REF I/O Internal LDO output. Connected a 1uF capacitor to this pin.
3 NC
No Connection
4 CS
I/O Current sense input pin.
5 NC
No Connection
6 SW
I/O Drain of internal MOSFET.
7
GATE
I/O The gate voltage clamp of external power MOSFET.
8
VDD
P Power supply voltage pin.
9 FB
I/O Feedback pin.
10
COMP
I/O
Loop compensation pin. Connect to a compensation network to
stabilize the LED driver and achieve a constant LED driver current.
11 GND P Ground.
12
I_DET
I/O Line current detect input pin.
13 BL
I/O BL optional pin
14 SD
I/O Shut down pin
Terminal Assignment OB3663LP
Number Pin Name I/O Pin Function
1 REF I/O Internal LDO output. Connected a 10uF capacitor to this pin.
2 CS
I/O Current sense input pin.
3 SW
I/O Drain of internal MOSFET.
4
GATE
I/O The gate voltage clamp of external power MOSFET.
5
VDD
P Power supply voltage pin.
6 FB
I/O Feedback pin.
7
COMP
I/O
Loop compensation pin. Connect to a compensation network to
stabilize the LED driver and achieve a constant LED driver current.
8
GND
P Ground.
9
PHASE
I/O Phase detect pin.
10 OPT
I/O Optional function output for applications
©On-Bright Electronics
Confidential
-4-
Preliminary Datasheet
OB_DOC_DS_366304



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