OB3330 Datasheet PDF - On-Bright

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OB3330
On-Bright

Part Number OB3330
Description High Performance LED Lighting Driver
Page 10 Pages


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OB3330
High Performance LED Lighting Driver
GENERAL DESCRIPTION
The OB3330 is power factor correction,
primary-side-control LED lighting driver with
advanced features to provide high efficiency
control for lighting applications.
OB3330 features an internal start-up timer for
stand-alone applications, an analog multiplier for
power factor correction (PFC), zero current
detectors (ZCD) to ensure transition mode (TM)
operation, a current sensing comparator with
built-in leading-edge blanking, and a totem pole
output.
OB3330 offers great protection coverage including
VCC under voltage lockout (UVLO), VCC over
voltage protection, load voltage over voltage
protection, Level selectable cycle-by-cycle current
limiting, over temperature protection, LED
open/short circuit protection and gate drive output
clamping for external power MOSFET protection.
FEATURES
Primary-Side Control with Single Stage PFC
Topology
Minimized BOM Count
Transition Mode (TM) Operation to Achieve
High Efficiency
Analog multiplier for Power Factor Correction
High Current Accuracy
Cycle-by-Cycle Current Limiting (OCP)
Selectable Threshold of OCP
VCC Over Voltage Protection
Output Over Voltage Protection
Over-temperature Protection
LED Open Circuit Protection
LED Short Circuit Protection
Soft-start
VCC Under Voltage Lockout (UVLO)
Ultra-low Start-up Current
APPLICATIONS
LED Lighting
Industrial and Commercial lighting
Residential lighting
TYPICAL APPLICATION
Figure1: OB3330 Typical Application Schematic
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_333000



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Absolute Maximum Ratings
Parameter
VCC Input Voltage to GND
GATE to GND
I/O (except GATE) to GND
Operating Ambient Temp. TA
Operating Junction Temp. TJ
Min/Max Storage Temp. Tstg
Lead Temp. (10 Sec)
Value
-0.3V to 40V
-0.3V to 40V
-0.3V to 7V
-20~ 85
-40 ~150
-55 ~150
260
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.
OB3330
High Performance LED Lighting Driver
Recommended Operating Range
Parameter
VCC Voltage
Value
11V to 25V
Ordering Information
Part Number
OB3330CP
OB3330CPA
Description
8 Pin SOP, Pb free in Tube
8 Pin SOP, Pb free in T&R
Note: All Devices are offered in Pb-free Package if not
otherwise noted.
OB3330 X X X
PSR+PFC LED Driver
Marking Information
Package
C:SOP8
Package Pb free
P:Pb-free
Packing
Blank:Tube
A: Tape/Reel
YWWZZZ
OB3330CP
s
Y: Year Code
WW: Week Code (01-52)
ZZZ:Lot Code
C: SOP8
P:Pb-free Package
S: Internal Code(Optional)
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
OB_DOC_DS_333000



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Pin Configuration for OB3330
OB3330
High Performance LED Lighting Driver
Terminal Assignment for OB3330
Number
1
2
3
4
5
6
7
8
Pin Name I/O
ZCD
I
OCP_TH I/O
MULT
I
COMP
VCC
GATE
GND
CS
I/O
P
O
P
I
Pin Function
Zero current detection pin. When activated, a new switching cycle
starts. Connect this pin through a resistor divider from the auxiliary
winding to ground. This pin is also used for output over voltage
protection (OVP).
OCP threshold level selecting pin. Connected an external resistor to
ground to select the OCP threshold voltage.
Input of multiplier pin. Connected this pin to line voltage after bridge
diodes via a resistor divider to provide sinusoidal reference voltage
to the current loop.
Loop compensation pin. Connect a compensation network to
stabilize the LED driver and achieve a constant LED driver current.
DC supply voltage pin.
Gate drive output pin.
Ground pin.
Current sense input pin.
©On-Bright Electronics
Confidential
-3-
Preliminary Datasheet
OB_DOC_DS_333000



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Functional Block Diagram
OB3330
High Performance LED Lighting Driver
PWM
Figure2: OB3330 Functional Block Diagram
©On-Bright Electronics
Confidential
-4-
Preliminary Datasheet
OB_DOC_DS_333000



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