On-Bright OB3338C
OB3338C is a dimmable offline controller, achieve high power factor, low THD and no stroboscopic specialized for LED lighting application combing with PFC system. It can achieve low system cost for an isolated lighting application by primary side control in a single stage converter. The proprietary CC control scheme is used.| Part No. | OB3338C |
|---|---|
| Datasheet | OB3338C Download |
| Manufacturer |  On-Bright |
| Description | Dimmable Offline LED Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The proprietary CC control scheme is used. Quasi-resonant (QR) operation and clamping frequency greatly improves the system efficiency. The advanced start-up technology is used to meet the start-up time requirement (<0.5s). The constant output current is compensated for tolerance of transformer inductance variation. And the line compensation is built in OB3338C for high precisely constant output current control. OB3338C offers a dimmable function, the LED current can be controlled by setting the duty cycle of PWM waveform into the DIM pin. OB3338C 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. OB3338C is offered in SOP8 package. TYPICAL APPLICATIONFEATURES
● Dimmable LED current control● Primary-side sensing and regulation without TL431 and opto-coupler
● High precision const...
