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