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BP3123 Dataheets PDF



Part Number BP3123
Manufacturers BPS
Logo BPS
Description High Precision PSR Constant Current LED Driver
Datasheet BP3123 DatasheetBP3123 Datasheet (PDF)

BP3123 High Precision PSR Constant Current LED Driver Description The BP3123 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 especially suitable for flyback convertor under universal input. The output power of system is recommended to less than 5W. The BP3123 integrates 650V power MOSFET. Since adopting primary sense and feedback contro.

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BP3123 High Precision PSR Constant Current LED Driver Description The BP3123 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 especially suitable for flyback convertor under universal input. The output power of system is recommended to less than 5W. The BP3123 integrates 650V 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. It uses patent pending source driver architecture and demagnetization sensing technology, the operating current is very low, and it doesn’t need the auxiliary winding for sensing the output current and supplying the chip. The low component counts and small system size are realized. Since using the proprietary high accurate current sense method, the BP3123 realizes ±5% accuracy of LED current along with excellent line and load regulation. The BP3123 offers rich protection functions including LED open/short circuit protection, CS resistor short circuit protection, over-temperature protection, VCC under voltage protection. Typical Application Features  Built-in 650V Power MOSFET  Constant current control without secondary sense and feedback circuit.  No Auxiliary winding for sensing and supplying  Ultra low operating current to improve efficiency  Universal input voltage  ±5% LED current accuracy  LED short and open circuit protection  CS resistor short circuit protection  VCC under-voltage protection  Over temperature protection  Available in SOP-8 package Applications  GU10/E27 LED bulb, spot light  Other LED lighting NP NS AC BP3123 4 OUT 3 VCC 1 CS 2 GND NC 8 NC 7 DRAIN 6 DRAIN 5 BP3123_DS_Rev.1.0 Figure 1. Typical application circuit for BP3123 www.bpsemi.com Bright Power Semiconductor Co. Confidential – Customer Use Only 1 BP3123 High Precision PSR Constant Current LED Driver Ordering Information Part Number Package BP3123 SOP8 Operating Temperature -40℃ to 105℃ Package Method Tape 2,500 Piece/Roll Marking BP3123 XXXXXY WXYY Pin Configuration and Marking Information CS GND VCC OUT BP3123 XXXXXY WXYY NC NC DRAIN DRAIN XXXXXY: Lot Code W: Sign X: Year YY: Week Pin Definition Pin No. Name 1 CS 2 GND 3 VCC 4 OUT 5,6 DRAIN 7,8 NC Figure 2. Pin configuration Description Current sense. This pin connects a current sense resistor to GND to detect the primary current of transformer. Ground Power supply Internal high voltage MOSFET Source Internal high voltage MOSFET Drain No connection, must be floated BP3123_DS_Rev.1.0 www.bpsemi.com Bright Power Semiconductor Co. Confidential – Customer Use Only 2 BP3123 High Precision PSR Constant Current LED Driver Absolute Maximum Ratings (note1) Symbol Parameters Range Units ICC_max VCC pin maximum sink current 5 mA DRAIN Internal HV MOSFET drain voltage -0.3~650 V CS Current sense pin input voltage -0.3~6 V OUT Internal HV MOSFET Source voltage -0.3~18 V PDMAX θJA Power dissipation (note2) Thermal resistance (Junction to Ambient) 0.45 W 145 ℃/W TJ Operating junction temperature -40 to 150 ℃ TSTG Storage temperature range -55 to 150 ℃ ESD (note3) 2 KV Note 1: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. Under “recommended operating conditions” the device operation is assured, but some particular parameter may not be achieved. The electrical characteristics table defines the operation range of the device, the electrical characteristics is assured on DC and AC voltage by test program. For the parameters without minimum and maximum value in the EC table, the typical value defines the operation range, the accuracy is not guaranteed by spec. Note 2: The maximum power dissipation decrease if temperature rise, it is decided by TJMAX, θJA, and environment temperature (TA). The maximum power dissipation is the lower one between PDMAX = (TJMAX - TA)/ θJA and the number listed in the maximum table. Note 3: Human Body mode, 100pF capacitor discharge on 1.5KΩ resistor Recommended Operation Conditions Symbol POUT1 POUT2 FOP Parameter Output power (input voltage 230V±15%) Output power (input voltage 85V~265V) System operating frequency Range <6 <5 50 Unit W W KHz BP3123_DS_Rev.1.0 www.bpsemi.com Bright Power Semiconductor Co. Confidential – Customer Use Only 3 BP3123 High Precision PSR Constant Current LED Driver Electrical Characteristics (Notes 4, 5) (Unless otherwise specified, VCC=14V and TA =25 ℃) Symbol Parameter Conditions Min. Typ. Max. Units Supply Voltage Section VCC_Clamp VCC_ON V CC_UVLO VCC clamp voltage Turn on threshold voltage Turn off threshold voltage 1mA VCC rising VCC falling 15 17 V 13.8 V 9V IST VCC startup current VCC= VCC_ON - 1V 60 100 uA IOP VC.


UTCM2904 BP3123 N184H3-L01


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