LED驱动电源资料_图文

1、 陕西亚成微电子有限责任公司技术支持部2010.10 OUTLINE:、Basic circuit for LED driver 1Basic circuit for LED driver2、RM3253 Description3、5W-LED Application Circuit 1、basic circuit LED driverbasic circuit LED driver I ntegral Type :Integrated power supply and constant current circuit,simple structure, low cost, suitable

2、for low powerli ti th f ll i40Wapplications the following 40W Split Type:Independent power supply and constant current circuit,with flexibility, increased flexibility, high power lightingapplications for more than 40W www.reactor-2010/11/11 SPEC. AC Input 90V 264V 90V 264V 90V 264V Power range<15

3、W 10W 40W >40W PF required No Yes PF 094Yes PF 094PF requiredNo Yes, PF >0.94 Yes, PF >0.94 Current Accuracy±5% for DC level ±5% for DC level ±5% for DC level Full load efficiency 80% >85% >87%Residential ,interior decoration Table Lamp / residential lighting / Landscap

4、e ,stage lighting / Applications/ lights, etc g g garden lighting g g g lights / outdoor decorative lights, etc RM Referral Program RM3253 2、RM3253 DescriptionThe RM3253 switch Intergard Circuit cost effectively replace all power supplies,and up to 5W output power based on unregulated isolated linea

5、r transformer (50/60HZ. Unlike conventional PWM (pulse width modulation controllers, they regulate the output voltage in a new method of off-time modulation control. The controller consists of a VCO (voltage control oscillator, Sense and logic circuit, VDD pin, under-voltage lockout circuit, protect

6、ion for over-voltage, current limited circuit, leading edge blanking, over load protection and fault condition auto-restart. They are leading edge blanking over load protection and fault condition auto-restart They are ideal low power AC/DC adapter/charger solution for portable devices, otherwise,it

7、s Built-in 800V high voltage BJT and minimal external componets. Package Function DescriptionPIN 1: VDD Power SupplyPIN 2: NC Not ConnectedPIN2:NC Not ConnectedPIN 3: Sense Current sensor,it senses the voltage via asensed resistorPIN 4: OE Emmiter Pin of the power BJT switch.PIN 5、6: OC Output Pin(

8、Connect to switchingtransformerPIN 7、8: GND Ground ItemSupply VoltageOperation Voltage 21 V Turn-on Threshold Voltage VDD ON 111213V Turn-off Threshold Voltage VDD OFF 5.56 6.5VOver-voltage Thershold Vovp2830V OscillatorOperation Frequency 455055KHZ Current Sensing Leading Edge Blanking 250 300350nS

9、 Current Sense DetectionVDD=15V0.450.50.55VVoltage 124D1LA C -IN1L13+EC2+EC1R3F1NC12D2R1R2R41834D3273645U1RM3253C2R5R6R7 Describle P/N NO Package Supplier C11nF_X5R_1KV_08051DIPC21uF_X5R_50v_08051SMDC31nF_X5R_100V_08051DIPC410uF_X5R_25V_12061SMDD1Z6471SMDD2FR1071DIP DIODE D3FR1041DIP DIODE D4HER2041

10、DIP DIODE EC1,EC2 4.7uF_X5R_400V2DIP F1250V_0.5A1DIPL11mH1SMDR1,R21M8_5%_08052SMDR3270K_5%_08051SMD270K5%0805R410M_5%_08051SMDR51K5_5%_08051SMDR63R_1%_08051SMDR73R_1%_08051SMD15R5%0805R815R_5%_08051SMDR9100K_5%_08051SMDT1Transformer1DIP TDK U1RM32521SMD Test Report-Test Conditiondi i ffi iEfficiency

11、 Test :Input voltage3X1LED4X1LED5X1LED EPS2.0 Level 5. 115Vac/60HZ 79.99%82.40%84.47%>76.61% 230Vac/50HZ 78.44%81.25%83.79%Output Current Accuracy Test :Condition VIN=100Vac VIN=115Vac VIN=220Vac VIN=265Vac 3W-LED 0.330 0.330 0.330 0.3254W-LED 0.330 0.330 0.330 0.3305W-LED 0.330 0.330 0.330 0.330 1 三层绝缘胶纸 10 PIN4 to PIN5 21T 0.21mm 3 三层绝缘胶纸 PIN3 t to PIN1 60T 0 0.21mm 21 密绕 2