LD7837
Description
The LD7837 is a high performance primary side Flyback or Buck Boost LED Controller with HV start-up special design for LED lighting. This IC operating on transition mode(TM) and integrated with pleted safety requirement protections. It minimizes the ponents counts in a SOP-7 package. Those make it easy design for cost- effective applications.
This chip provides High Current Accuracy at full input voltage range form from 85V to 277V Vac. The constant on time PFC control and THDi pensator could easily achieve PF>0.90 and THDi <10% to meet most of the international standard requirements.
With pleted protection built inside this IC, such as over voltage protection (OVP), over current protection (OCP) and short circuit protection (SCP), it enables the circuit to meet most safety requirements in both normal and abnormal test.
Features
- High voltage 700V startup circuit
- Primary Side PFC controller
- Optimize THDi Over Wide Universal Range
- High LED Current Accuracy
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