On-Bright confidential to
OB3613x Series
High PF Non-Isolated Buck LED Lighting Power Switch
GENERAL DESCRIPTION
OB361...
On-Bright confidential to
OB3613x Series
High PF Non-Isolated Buck LED Lighting Power Switch
GENERAL DESCRIPTION
OB3613x 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.
OB3613x integrates a
MOSFET to decrease physical volume. The proprietary CC control scheme is used and the system can achieve high power factor with constant on-time control scheme.
OB3613x 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.
OB3613x is offered in SOP8, SOP7 or DIP8 package.
FEATURES
Buck topology with high power factor Integrated a HV
MOSFET 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
~ AC
OB3613x
DRAIN
CS
DRAIN
COMP FB
GND
VDD
Figure1: OB3613x Typical Application Schematic
©On-Bright Electronics
Confidential -1-
Datasheet OB_DOC_DS_3613XA4
OB3613x Serie...