BP2861AJ 是一款外置 OVP 降压型 LED 恒流驱动芯 片。芯片工作在电感电流临界连续模式，适用于 85Vac~265Vac 全范围输入电压的非隔离降压型 LED 恒流电源。芯片 ROVP 引脚带 Enable 功能，适 用于开关调色和感应灯应用。 BP2861AJ?芯片内部集成 500V 功率开关，采用专利 的退磁检测技术和高压 JFET 供电技术，无需 VCC 电容和启动电阻，使其外围器件更简单，节约了外 围的成本和体积。 BP2861AJ 芯片内置高精度的电流采样电路，同时 采用了专利的恒流控制技术，实现高精度的 LED 恒 流输出和优异的线电压调整率。芯片工作在电感 电流临界模式，输出电流不随电感量和 LED 工作 电压的变化而变化，实现优异的负载调整率。 BP2861AJ具有多重保护功能，包括LED短路保护， 芯片供电欠压保护，外置 OVP，芯片温度过热调节 等。 BP2861AJ 采用 SOP7 封装.

BP2861AJ is an external OVP step-down type LED constant current driver core?A piece.The chip operates in inductive current critical continuous mode, applicableFull range of input voltage 85Vac~265Vac non-isolated step-down type

LED constant current power supply.Chip ROVP pin band Enable function, suitableFor on - off color modulation and induction lamp applications.

BP2861AJ chip integrates 500V power switch inside and adopts patentThe demagnetization detection technology and high voltage JFET power supply technology, no VCCCapacitors and start resistors make their peripherals simpler and save outsideThe cost and volume of the circumference.

BP2861AJ chip has built-in high precision current sampling circuit, at the same timePatented constant current control technology is adopted to achieve high precision LED constantStream output and excellent line voltage adjustment rate.The chip works on the inductorCurrent critical mode, the output current does not work with the inductance and LEDThe voltage changes to achieve excellent load adjustment rate.

BP2861AJ?has multiple protection features, including LED short circuit protection,Chip power supply undervoltage protection, external OVP, chip temperature overheating regulationEtc.

BP2861AJ is packaged in SOP7.