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BP3125

BPS
Part Number BP3125
Manufacturer BPS
Description High Precision PSR Constant Current LED Driver
Published Dec 19, 2013
Detailed Description BP3125 High Precision PSR Constant Current LED Driver Description The BP3125 is a high precision primary-side feedback ...
Datasheet PDF File BP3125 PDF File

BP3125
BP3125

Overview
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 circuit protection  VCC under-voltage protection  Feedback loop short circuit protection  Current sense resistor open circuit protection  Over temperature protection  No external loop compensation component required  Available in DIP-8 package Applications  GU10/E27 LED bulb, spot light  Other LED lighting NP NS AC BP3125_EN_DS_Rev.
1.
0 BP3125 FB VCC CS GND NC NC DRAIN DRAIN NAUX Figure 1.
Typical application circuit for BP3125 www.
bpsemi.
com Bright Power Semiconductor Co.
Confidential...


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