BP2821XK is a high-precision step-down LED constant current driver chip. The chip operates in inductor current critical continuous mode and is suitable for non isolated step-down LED constant current power supply with a full range of input voltages from 85Vac to 265Vac. The BP2821XK chip integrates a five hundredV power switch internally, using demagnetization detection technology and high-voltage JFET power supply technology, without the need for VCC capacitors and starting resistors, making its peripheral devices simpler and saving peripheral costs and volume.

The BP2821XK chip is equipped with a high-precision current sampling circuit and utilizes constant current control technology to achieve high-precision LED constant current output and excellent line voltage regulation. The chip operates in inductor current critical mode, and the output current does not vary with changes in inductance and LED operating voltage, achieving excellent load regulation. BP2821XK has multiple protection functions, including LED short circuit protection, chip temperature overheating regulation, etc. BP2821XK is packaged in ESSOP6.

characteristic

Integrated 600V ultra fast recovery diode, no VCC capacitor, no starting resistor, integrated high voltage power supply function, no flashing under low bus voltage, 5% LED output current accuracy, LED short circuit protection, overheating regulation function, packaged in ESSOP6

application

LED candle light, LED bulb light, other LED lighting

PRODUCT MODEL	encapsulation	MOS internal resistance	MOS withstand voltage	Over temperature protection	open protect	Output current @ Vout=72V (mA) (Vin=176V-265V)	Maximum output power (W) (Vin=176V-265V)
BP2863X	ASOP-7	22Ω-12Ω	five hundredV	1forty℃	-	120-190	eighteen
BP2863XJ	ASOP-7	22Ω-4.8Ω	five hundredV	1forty℃	Y	120-380	thirty
BP2863XK	ASOP-7	22Ω-12Ω	five hundredV	120℃	-	120-190	eighteen
BP2861X	SOP-7T	22Ω-4.8Ω	500V	1forty℃	-	120-380	12-30
BP2861XJ	SOP-7T	22Ω-4.8Ω	500V	1forty℃	Y	120-380	30
BP2861XK	SOP-7T	22Ω-4.8Ω	500V	120℃	-	120-380	30
BP2821XK	ESSOP6	16Ω-8.5Ω	500V	120℃	-	eighteen0-380	30
BP2866XJ	SOP-7D	12Ω-2.0Ω	500V	140℃	Y	220-550	40
BP2868FN	HSOP-7	4.8Ω-3Ω	500V	140℃	Y	450-500	30-43
BP2826FK	ESSOP6	3Ω	500V	120℃	-	500	43
BP2867XJ	DIP-7D	5.8Ω-2.0Ω	500V	140℃	Y	380-550	50
BP2862XS	BPSOP10	2Ω-3.8Ω	500V	140℃	Y	380-550	22-50
BP2872XS	BPSOP10	2Ω-3.8Ω	500V	140℃	Four speed fixed OVP (135V/225V/320V/none)	200-350mA	30-200
BP2870AS	SOP-8	-	-	140℃	Four speed fixed OVP (135V/225V/320V/none)	200-500mA	30-200
BP2872XD	BPSOP10	2Ω-3.8Ω	500V	140℃	Y	200-350mA	30-200
BP2870D	SOP-8	-	-	140°	Y	200-750mA	30-200