OB3613 Datasheet PDF - On-Bright

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OB3613
On-Bright

Part Number OB3613
Description High PF Non-Isolated Buck LED Lighting Controller
Page 9 Pages


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OB3613
High PF Non-Isolated Buck LED Lighting Controller
GENERAL DESCRIPTION
OB3613 is a high power factor, highly integrated
buck regulator with advanced features to provide
high efficiency control and high precision constant
current output for LED lighting applications.
The proprietary CC control scheme is used and
the system can achieve high power factor with
constant on-time control scheme.
OB3613 offers comprehensive protection
coverage with auto-recovery features including
LED open loop protection, LED short circuit
protection, cycle-by-cycle current limiting, built-in
leading edge blanking, VDD under voltage lockout
(UVLO), etc.
OB3613 is offered in SOT23-6 package.
FEATURES
Buck topology with high power factor
High precision constant current regulation at
universal AC input
Low system cost and high efficiency
Quasi-Resonant operation
Programmable CC regulation
LED short circuit protection
LED open loop protection
Cycle-by-cycle current limiting
Built-in leading edge blanking (LEB)
VDD under voltage lockout with hysteresis
VDD over voltage protection
Over temperature protection (OTP)
APPLICATIONS
LED lighting
TYPICAL APPLICATION
©On-Bright Electronics
Confidential
-1-
Preliminary Datasheet
OB_DOC_DS_361300



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OB3613
High PF Non-Isolated Buck LED Lighting Controller
GENERAL INFORMATION
Pin Configuration
The pin map is shown as below for SOT23-6.
FB 1
6 COMP
GND 2
5 CS
VDD 3
4 GATE
Ordering Information
Part Number
Description
OB3613MP
SOT23-6, Pb-free, T&R
Note: All Devices are offered in Pb-free Package if not
otherwise noted.
Package Dissipation Rating
Package
RθJA (/W)
SOT23-6
200
Absolute Maximum Ratings
Parameter
Value
VDD Voltage
-0.3 to 40V
Gate Voltage
-0.3 to 13V
CS Input Voltage
-0.3 to 7V
FB Input Voltage
-0.3 to 7V
Min/Max Operating
Junction Temperature TJ
Min/Max Storage
Temperature Tstg
Lead Temperature
(Soldering, 10secs)
-40 to 150
-55 to 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.
©On-Bright Electronics
Confidential
-2-
Preliminary Datasheet
OB_DOC_DS_361300



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Marking Information
OB3613
High PF Non-Isolated Buck LED Lighting Controller
TERMINAL ASSIGNMENTS
Pin Num Pin Name I/O Description
1
FB
I
The voltage feedback from auxiliary winding. Connected to resistor
divider from auxiliary winding reflecting output voltage.
2
GND
P Power Ground.
3
VDD
P Power supply Input.
4
GATE
O Gate driver output for power MOSFET.
5 CS I Current sensing terminal.
6
COMP
O
Loop compensation pin. A capacitor is connected between COMP and
GND.
©On-Bright Electronics
Confidential
-3-
Preliminary Datasheet
OB_DOC_DS_361300



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BLOCK DIAGRAM
OB3613
High PF Non-Isolated Buck LED Lighting Controller
©On-Bright Electronics
Confidential
-4-
Preliminary Datasheet
OB_DOC_DS_361300



OB3613 datasheet pdf
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OB3613 pdf
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