BP3125
High Precision PSR Constant Current LED Driver
Description
The BP3125 is a high precision primary-side feedback ...
BP3125
High Precision PSR Constant Current LED Driver
Description
The BP3125 is a high precision primary-side feedback and regulation controller for LED lighting, it operates in constant current control mode and is designed to work in inductor current discontinuous conduction mode and extremely suitable for flyback convertor under universal input, the output power of system should be less than 12W.
The BP3125 integrates 600V power
MOSFET. Since adopting primary sense and feedback control technology, the secondary sense and feedback circuit is eliminated. The loop compensation components are also removed while maintaining stability overall operating conditions. The low component counts and low BOM cost are realized.
Since using the proprietary high accurate current sense method, the BP3125 realizes ±3% accuracy of LED current along with excellent line regulation and load regulation.
The BP3125 offers rich protection functions including LED short circuit protection, LED open circuit protection, die over-temperature protection, VCC over
voltage protection, VCC under
voltage protection and FB short circuit protection. All the protection features are auto-recovery.
Typical Application
Features
Built-in 600V Power
MOSFET Constant current control without secondary sense
and feedback circuit. ±3% LED current accuracy Ultra low operating current to improve efficiency High resistance feedback resistor to improve
efficiency Universal input
voltage LED short and open circ...