LDD-L DC-DC Constant Current LED driver series Features : Constant current output: 300mA to 700mA Wide input voltage: 9 ~ 36VDC Wide output LED string voltage: 2 ~ 32VDC High efficiency up to 95% DC/DC step-down converter Built-in EMI filter, comply with EN55015 and FCC part15 without additional input filter and capacitors Built-in PWM and remote ON/OFF control Protections: Short circuit / Over temperature Cooling by free air convection Fully encapsulated with IP67 level Compact size Low cost, high reliability Suitable for driving illumination LED 3 years warranty SPECIFICATION ORDER NO. OUTPUT LDD-300L LDD-350L LDD-500L LDD-600L LDD-700L CURRENT RANGE 300mA 350mA 500mA 600mA 700mA VOLTAGE RANGE 2 ~ 32VDC 150mVp-p 150mVp-p 200mVp-p 200mVp-p 500mA 600mA 700mA CURRENT ACCURACY (Typ.) 5% at 24VDC input RIPPLE & NOISE(max.) Note.2 150mVp-p 40KHz ~ 1000KHz SWITCHING FREQENCY EXTERNAL CAPACITANCE LOAD (max.) 2.2uF 9 ~ 36VDC VOLTAGE RANGE 95% at full load and 24VDC/36VDC input EFFICIENCY (max.) 350mA Full load Note.3 300mA DC CURRENT 10mA No load INPUT Capacitor FILTER Leave open if not use PWM REMOTE ON/OFF DIMMING & PWM FREQUENCY ON/OFF CONTROL QUIESCENT INPUT CURRENT IN SHUTDOWN MODE(max.) Power ON with dimming: DIM ~ -Vin >3.5 ~ 8VDC or open circuit Power OFF : DIM ~ -Vin < 0.5VDC or short 100 ~ 1KHz 1mA at PWM dimming OFF and 24VDC input Regulated at rated output current SHORT CIRCUIT Protection type: Can be continued, recovers automatically after fault condition is removed PROTECTION Tj 150 OVER TEMPERATURE typically(IC1) detect on main control IC Protection type : Shut down, recovers automatically after temperature goes down -40 ~ + 85 (Refer to derating curve) WORKING TEMP. WORKING HUMIDITY STORAGE TEMP., HUMIDITY ENVIRONMENT TEMP. COEFFICIENT VIBRATION 20% ~ 90% RH non-condensing -55 ~ +125 , 10 ~ 95% RH 0.03% / 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes OPERATING CASE TEMP. (max.) 100 EMI CONDUCTION & RADIATION Compliance to EN55015, FCC part 15 class B Compliance to EN61000-4-2,3,4,6,8, light industry level, criteria A EMC EMS IMMUNITY 2000Khrs min. MIL-HDBK-217F (25 ) 22.6*9.9*8.9mm or 0.89"*0.39"*0.33" inch (L*W*H) WEIGHT 4g POTTING MATERIAL Expoxy(UL94-V0) 3.81 ( 0.15 ) 9.9 ( 0.39 ) 1 Unit: mm (inch) SIDE VIEW 5 22.6 (0.89) 17.78 (0.7) 2.54 ( 0.10 ) 6 Pin No. Output Comment 1 +Vin DC Supply 3 PWM DIM ON/OFF and PWM Dimming (Leave open if not used) 3 4 BOTTOM VIEW Derating Curve Pin Configuration Mechanical Specification 5 -Vout Don't connect to -Vout LED - Connection 6 +Vout LED + Connection 4 -Vin 100 LOAD (%) OTHERS MTBF DIMENSION 85 for 300~500mA 75 71 25 -40 7.62(0.30) NOTE for 600~700mA 50 8.9 (0.33) 0 25 50 Ta ( 71 85 100 ) 1.All parameters are specified at normal input(24VDC), rated load, 25 70% RH ambient. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf capacitor. 3.Test condition: 24VDC input. File Name:LDD-L-SPEC 2011-06-02 LDD-L DC-DC Constant Current LED driver PWM Dimming Control ON H ON Standard Application ON +Vin PWM Signal L OFF series OFF +Vout OFF 100~1KHz 1st LED PWM LDD-L H Max Dimming L Output Current Last LED 0 During PWM dimming operation, the output current will change to PWM style. -Vin 100 -Vout H: >3.5~8VDC or open circuit Tol : 3%(Typ.) L: <0.5VDC or short I out(% ) 75 50 25 0 25 50 75 100 Duty Cycle (%) Efficiency VS Output Voltage(Number of LEDs) Fig-1 12VDC input, 1~3 LEDs(Vf=3V) Fig-2 24VDC input, 1~7 LEDs(Vf=3V) 300mA 100.0% 100% 100.0% 100% 350mA 500mA 600mA 95.0% 95% 95.0% 95% 700mA 300 mA 500 mA 90.0% 90% 600 mA 700 mA 85.0% 85% 80.0% 80% 75.0% 75% EFFICIENCY (%) EFFICIENCY (%) 350 mA 90.0% 90% 85.0% 85% 80.0% 80% 75.0% 75% 70.0% 70% 70.0% 70% 1 2 3 11 22 44 55 66 77 Output Voltage(LEDs) Output Voltage(LEDs) Fig-3 33 36VDC input, 1~10 LEDs(Vf=3V) 300 mA 100.0% 100% 350 mA 500 mA 600 mA 95% 95.0% 700 mA 90% EFFICIENCY (%) 90.0% 85% 85.0% 80% 80.0% 75% 75.0% 70% 70.0% 65% 65.0% 11 22 33 44 5 5 66 77 88 9 9 10 10 Output Voltage(LEDs) File Name:LDD-L-SPEC 2011-06-02