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
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Preliminary Datasheet
OB_DOC_DS_361300
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