LED Driver xppower.com LDU56 Series Constant Current Output LED Drive Current up to 1000 mA LED Strings from 2 V to 56 V PWM Dimming Control High Efficiency - up to 97% Open or Short Circuit LED Protection 3 Year Warranty Specification Input General Input Voltage 9-60 VDC Efficiency See tables Input Filter Capacitor Switching Frequency 40-1000 kHz variable Input Surge 65 VDC for 500 ms MTBF >2.0 MHrs to MIL-HDBK-217F at 25 C, GB Output Output Voltage 2-56 V (Vin must be at least 4 V greater than Environmental Vout) Operating Temperature -40 C to +85 C for 300/350 mA versions, Output Current See tables -40 C to +70 C for others Output Current See tables Storage Temperature -40 C to +125 C Accuracy Humidity Up to 95%, non-condensing Ripple & Noise See tables, Thermal Impedance 16.7 C/W model dependant measured with 20 MHz bandwidth Short Circuit Protection Current is limited to the rated output Capacitive Load 2.2 F max EMC Temperature 0.03%/C max Emissions EN55015 class B conducted & radiated Coefficient with external components - see Remote On/Off On = 2.5-5.0 V or open circuit application notes Off = 0.8 V (applied to control pin) ESD Immunity EN61000-4-2, level 2 Perf Criteria A Quiescent input current is 3 mA max, Radiated Immunity EN61000-4-3, level 2 Perf Criteria A Remote On/Off Signal 1 mA max Current EFT/Burst EN61000-4-4, level 2 Perf Criteria A Conducted Immunity EN61000-4-6, level 2 Perf Criteria A Dimming Magnetic Field EN61000-4-8, level 2 Perf Criteria A PWM Output Current Range 1% to 100% Safety Operating Frequency 1 kHz max On Time 50 s min Safety Approvals CE (Meets all applicable directives), Off Time 50 s min UKCA (Meets all applicable legislation) Amplitude 2.5 V, 5 V max DC-DCDC-DC LDU56 Models and Ratings With Dimming Control Output Current (1) Output Power Input Voltage Range Output Voltage Output Ripple & Noise Output Current Efficiency Model Number Accuracy 16.8 W 9-60 V 2-56 V 250 mV 300 mA 6% 97% LDU5660S300 19.6 W 9-60 V 2-56 V 300 mV 350 mA 5% 97% LDU5660S350 28.0 W 9-60 V 2-56 V 350 mV 500 mA 5% 97% LDU5660S500 33.6 W 9-60 V 2-56 V 400 mV 600 mA 5% 97% LDU5660S600 39.2 W 9-60 V 2-56 V 400 mV 700 mA 5% 97% LDU5660S700 50.0 W 9-60 V 2-56 V 450 mV 1000 mA 5% 97% LDU5660S1000 1. Add suffix -W for wired version, e.g. LDU5660S500-W, or -WD for wired version with dimming function e.g. LDU5660S500-WD. Mechanical Details LDU56 - 24 Pin DIL LDU56 - Wired versions 1.25 1.25 (31.75) (31.75) 0.90 (22.86) 0.80 1 (20.32) 12 5 23 4 9 11 0.49 0.49 0.80 Bottom View (12.45) (12.45) 0.12 0.49 (20.32) 0.60 0.80 Bottom View (3.05) (12.45) (15.24) (20.32) 24 5 1 12 13 24 13 23 22 16 14 3.94 3.94 DIA. 0.02 (100.0) (100.0) 0.60 (0.50) (15.24) 0.10 (2.54) 0.39 Stripped (10.0) & tinned LDU56 Connections LDU56 LDU56-W LDU56-WD Function 2 & 3 1 (Black) 1 (Black) -Vin: -DC supply 4 No Wire 5 (White) Control 9 & 11 12 (Blue) 12 (Blue) -Vout: LED cathode connection 14 & 16 13 (Yellow) 13 (Yellow) +Vout: LED anode connection 22 & 23 24 (Red) 24 (Red) +Vin: +DC supply Note: Do not connect pins 2 & 3 (-Vin) to pins 9 & 11 (-Vout) Notes 1. All dimensions are in inches (mm) 4. Pin pitch & length tolerance: 0.014 (0.35) 2. Weight: LDU56 - 0.04 lbs (17.7 g) approx. 5. Case tolerance: 0.02 (0.5) LDU56 (wired version) - 0.05 lbs (22.0 g) approx. 3. Pin diameter: 0.020.002 (0.50.05) Application Notes Output Current Adjustment by PWM +Vout 10K PWM Control LDU 1.25V A Pulse Width Modulated (PWM) signal with duty cycle DPWM can be applied to the control pin. -Vin 0V The output current can be determined using the equation : Iout = Rated Max I x Dpwm GND Dpwm = PWM duty cycle - Vout Input Filter to meet Class B Conducted Emissions +Vin +Vout +LED L1 C1 C2 L C3 LDU56 LDU5660Sxxx 2220,475K,100V,X7R 2220,475K,100V,X7R 68 H 100 F/100 V C3 C1 C2 GND -Vin -Vout +Vin +Vout +LED L1 C1 C2 L1, L2 C3 LDU56-WD LDU5660Sxxx-WD 2220,475K,100V,X7R 2220,475K,100V,X7R 47 H 100 F/100 V C3 C1 C2 GND -Vin -Vout L2 06 Oct 2021