On-Bright OB3663
The OB3663 is a high performance single stage AC/DC fly-back controller for dimmable LED luminaires. The OB3663 integrates advanced digital processing core to eliminate visible flicker. OB3663 is offered in SOP14 package (OB3663CP) and SSOP10 package (OB3663LP) .| Part No. | OB3663 |
|---|---|
| Datasheet | OB3663 Download |
| Manufacturer |  On-Bright |
| Description | Dimmable Flyback PSR Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
OB3663 offers fast startup feature, constant on-time control for power factor correction (PFC), zero current detector (ZCD) to ensure transition mode (TM) operation, and accurate current regulation. OB3663 offers comprehensive protection coverage including VDD under voltage lockout (UVLO), VDD over voltage protection, load voltage over voltage protection, cycle-by-cycle current limiting, over temperature protection, LED string open/short protection, driver output clamping for external power MOSFET protection, current sense resistor short protection, and transformer saturation protection.FEATURES
● Primary-Side Control with Single Stage PFC Topology● No visible flicker
● No bleeder design
● Total harmonic distortion <20% with PF>0.9
● Fast startup time (<0.5s without dimmer)
● Transition Mode (TM) operation to achieve high efficiency
● High current accuracy
● Source driving operation mode
● Cycle-by-Cycle Current Limiting (OCP)
● VDD Over Voltage Protection
● Outpu...
