OB3613
High PF Non-Isolated Buck LED Lighting Controller
GENERAL DESCRIPTION
OB3613 is a high power factor, highly inte...
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
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Preliminary Datasheet OB_DOC_DS_361300
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
Pa...