JH5553B Overview
The JH5553B（LP/H） is a high precision non-isolated buck driver with active PFC, specially designed for universal input offline constant current LED lighting. The driver with on-chip PFC circuit achieves high power factor and low THD. Operating in critical conduction mode, the power MOSFET switching loss is reduced and the inductor is fully utilized.
JH5553B Key Features
- Active-PFC for High PF and Low THD
- No VCC and P capacitor
- Integrated current sense resister
- Critical Conduction Mode Operation
- LED Short Protection
- Cycle by Cycle Current Limit
- Thermal Regulation Function
- Adopts SOP-7 / DIP-8 package