BP3102 PDF Datasheet – PSR Constant Current LED Driver

This post explains for the LED Driver. A PSR (Primary-Side Regulation) constant current LED driver is a type of LED driver that regulates the current supplied to an LED or a group of LEDs using a primary-side control technique. Unlike traditional LED drivers, which regulate the current on the secondary side (output side) of the power supply, PSR LED drivers control the current directly on the primary side (input side).

The Part Number is BP3102.

The function of this semiconductor is PSR Constant Current LED Driver.

The package is SOP 8 Pin Type.

Manufacturer: BPS ( Bright Power Semiconductor )

Preview images :

1 page
BP3102 pdf


This is High Precision PSR Constant Current LED Driver.

The BP3102 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 5W.

The BP3102 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.  […]

2 page
BP3102 pinout datasheet


1. Built-in 600V Power MOSFET

2. Constant current control without secondary sense and feedback circuit.

3. ±3% LED current accuracy

4. Ultra low operating current to improve efficiency

5. High resistance feedback resistor to improve efficiency

6. Universal input voltage

7. LED short and open circuit protection

8. VCC under-voltage protection

9. Feedback loop short circuit protection

10. Current sense resistor open circuit protection

BP3102 PDF Datasheet