BM0550HV BOOKLY | Alldatasheet
Document overview
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Technical content
2014/ 06 /05 BM www.bookly.com 1 BM0550HV Universal High Brightness LED Driv er DESC RIPTION APPL I CATIONS The BM0550HV is a high efficiency LED driver. It operates in wide range input voltage from 10V up to 600V . The de vice drives an external MOSFET at a fixed frequenc y. The frequency is programmable up to 3280KHz with a single resistor. The dimming control for chip ca n be either PWM input or linear input. The LED string is driven at a constant current without the need for loop compensation. BM0550HV re quires only few exter nal components to achieve constant LED current making it ideas for low cost LED driver. The chip is av ai lable in SOP-8 package. AC/DC or DC/DC LED driver applications Backlighting for flat panel displays General purpose constant current source Automotive Chargers FEATURES PIN CONFIGURATION(SOP-8) PART MARKING >90% efficiency 10V to 600V DC input range Constant current LED driver Linear and PWM dimming capability Internal thermal overload protection +LED V- (AC-220V input) -LED 1A/250V 22uF/100V BD1 B6S AC AC NC ES1J R5 47R 10K 1206 4.7uF/400V R2A NC 0.1uF/50V 1R3_1206 NC 1R2 TVR1 7D471 R8 47R 470K U1 BM0550HV 7 CS GND Gate Vin PWM_D VDD Rosc LD 2N60,TO-252 DR10*16,3mH
2014/06/05 BM www.bookly.com 2 BM0550HV Universal High Brightness LED Driver TYPICAL APPLCATION CIRCUIT
1 VIN Supply V oltage Input
2 CS Current sense. This pin senses the voltage across a resistor, to control PWM output. This pin also provides current amplitude information for current-mode control
3 GND Ground
4 Gate Gate driver output to drive the external MOSFET
5 Dim Dimming Control
6 Vdd Power supply pin for internal circuits
7 Ld Linear dimming by changing the current limit threshold at current sense comparator
8 Rosc This is used to charge an internal capacitor, to determine the switching frequency
ORDERING INFORMATION
Part Number Package Part Marking BM0550HV SOP-8 BM0550HV ※ Ta pe Reel ; Halogen -Free GND VIN+ U1 BM0550 CS GND Gate Vin PWM_D VDD Rosc LD 100uF/200V LED7 LED2 100uF/200V 0R22 1206 Ring core,100uH_3A LED4 250V 10A NMOS LED1 470K 0R62 1206 SB5200 LED6LED8 LED3 C4 33uF/50V R1 22R LED5 10uF/35V DC:+24V-100V OUTPUT:12V-1.5A-CC Vout / Vin < 0.5 应用图
2014/06/05 BM www.bookly.com 3 ABSOULTE MAXIMUM RATINGS (TA =25 Unless otherwise specified)℃ Parameter Symbol Value Unit DC Supply V oltage V IN 600 V Vdd to Ground Vdd 12 V CS, Gate, Dim, Ld Vdd+0.3V V Operating Temperature TOPR -40～85 ℃ Maximum Junction Temperature TJ(Max) -40~125 ℃ Storage Temperature TS -65～150 ℃ Thermal Resistance Junction – Case (*) R ӨJ C 150 /W℃ Power Dissipation PD 630 mW The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that exceeds the performance of the protection circuit to the IC. BM0550HV Unive rsal High Brightness LED Driver +12 - +24V DC-vin U1 BM0550HV CS GND Gate Vin PWM_D VDD Rosc LD SB5100 10uF/50V LED2 0R62 1206 LED4 LED5 100uF/100V LED1 0R22 1206 R1 82K LED6 NMOS 18A 100V 0R62 1206 Ring core,100uH_5A C4 33uF/50V LED3 CC-1.8A-9.6V output Vout / Vin > 0.5 应用图
2014/06/05 BM www.bookly.com 4
ELECTRICAL CHARACTERISTICS
(TA =25 , V℃ IN=12V , Unless otherwise specified) Symb ol Parameter Conditions Min. Typ. Max. Unit Supply Voltage ( VIN Pin ) ISD Shut Down Mode Supply Current DIM to Ground, 0.5 1 mA Vin DC Input Supply V oltage 10 600 V UVLO (on ) Start Threshold Voltage V DD Rising 6.45 6.7 6.95 V ΔUVLO Under Voltage Lockout Hysteresis VDD Falling 500 mV Internal Regulator ( VDD Pin ) V DD Internal Regulated Voltage Vin= 10V~600V , IDD =0, Gate Open 7.0 7.5 8.0 V ΔV DD Load Regulation IDD =0~1mA, V DIM =V DD, Rosc=226K Ω, G ate=500pF 100 mV V DD Maximum V DD Voltage Apply External V oltage 10 V IDD(ext) Current Available for External Circuit Vin=15~100V 0.7 mA Oscillator ( Rosc Pin ) Rosc=1 M Ω 20 25 30 KHz FOSC Frequency Rosc =226 KΩ 80 100 120 KHz Current Sensing ( CS Pin ) Vcs(TH ) Curr ent Sense Pull-in Threshold Voltage TA =-40℃~85℃ 225 250 275 mV TBLANK Current Sense Blanking Interval V CS =0.55VLD, V LD,=V DD 150 215 280 nS TDELAY Delay to Output V LD =0.15V , Vcs=0~0.22V aft er TBLANK, Vin=12V 300 nS Gate Driver Output ( GATE Pin ) V OL Output Low Level Io=-10mA 0 0.3 V V OH Output High Level Io=10mA V DD -0.3 V DD V Tr Rising Time Load Cap=500pF, V DD =7.5V 30 50 nS Tf Falling Time Load Cap=500pF, V DD =7.5V 30 50 nS PWM Dimming ( DIM Pin ) V EN(LO) PWM Dimming Input Low Voltage Vin=10V~600V 0.8 V V EN(HI) PWM Dimming Input High Voltage Vin=10V~600V 2 V R EN PWM Dimming Pull Down Resistance V EN =5V 50 100 150 K Ω Linear Dimming (Ld Pin) V LD Linear Dimming Voltage Vin =12V, TA <85℃ 250 mV BM0550HV Universal High Brightness LED Driver
2014/06/05 BM www.bookly.com 5 SOP-8 PACKAGE OUTLINE BM0550HV Universal High Brightness LED Driver