LED Driver xppower.com LDU Series Constant Current Output LED Drive Current up to 1000 mA LED Strings from 2 V to 57 V PWM & Analog Dimming Control High Efficiency up to 95% Open or Short Circuit LED Protection 3 Year Warranty Specification Input General Input Voltage LDU08 & 24: 7-30 VDC Efficiency See tables LDU48: 7-60 VDC Switching Frequency LDU08: 40-380 kHz variable Input Filter Capacitor LDU24: 50-330 kHz variable Input Surge LDU08 & 24: 40 VDC for 0.5 s LDU48: 20-500 kHz variable LDU48: 65 VDC for 0.5 s MTBF LDU08: >1.6 MHrs LDU24: >1.6 MHrs Output LDU48: >950 KHrs to MIL-HDBK-217F at 25 C, GB Output Voltage See tables (Vin must be at least 2 V greater than Vout) Environmental Output Current See tables Output Current Trim 25-100% Operating Temperature LDU08: -40 C to +85 C, Output Current LDU08: 6.0% max LDU24: -40 C to +85 C, Accuracy LDU24: 8.0% max LDU24 1000 mA unit: -40 C to +70 C, LDU48: 8.0% max LDU48: See derating curves Ripple & Noise LDU08: 200 mV pk-pk max Case Temperature LDU08 & 24: +100 C max LDU24: 250 mV pk-pk max LDU48: +110 C max (except 1000 mA units: 300mV pk-pk max) Storage Temperature -40 C to +125 C LDU48: See tables Humidity Up to 95%, non-condensing measured with 20 MHz bandwidth Thermal Impedance 35-50 C/W model dependant Short Circuit Protection Current is limited to the rated output Ingress Protection IP67 (wired versions) Temperature LDU08: 0.03%/C max Coefficient LDU24: 0.08%/C max Rating LDU48: 0.03%/C max Remote On/Off On = 0.3-1.25 V or open circuit Off = 0.15 V (applied to control pin) EMC LDU08 & 24: Quiescent input current is Emissions EN55022 class B conducted & radiated 25 A max, with external components - see LDU48: Quiescent input current is 100 A max application notes Remote On/Off Signal 1 mA max ESD Immunity EN61000-4-2, level 2 Perf Criteria A Current Radiated Immunity EN61000-4-3, level 2 Perf Criteria A EFT/Burst EN61000-4-4, level 2 Perf Criteria A Dimming Surge EN61000-4-5, level 2 Perf Criteria A PWM Conducted Immunity EN61000-4-6, level 2 Perf Criteria A Output Current Range 25% to 100% Operating Frequency 1 kHz max On Time 200 ns min Off Time 200 ns min Amplitude 1.25 V max DC Voltage Control Output Current Range 25% to 100% Control Input 0.3 to 1.25 V max Variable Resistor Output Current Range 25% to 100% DC DCDC DC LDU08/24 Models and Ratings With Dimming Control Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number 8.0 W 7 - 30 V 2 - 28 V 300 mA 95% LDU0830S300 8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350 14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500 17.0 W 7 - 30 V 2 - 28 V 600 mA 95% LDU2430S600 20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700 24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000 Wired Versions (No Dimming Control) Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number 8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350-W 14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500-W 20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700-W 24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000-W Wired Version with Dimming Control Output Power Input Voltage Range Output Voltage Output Current Efficiency Model Number 8.0 W 7 - 30 V 2 - 28 V 350 mA 95% LDU0830S350-WD 14.0 W 7 - 30 V 2 - 28 V 500 mA 95% LDU2430S500-WD 20.0 W 7 - 30 V 2 - 28 V 700 mA 95% LDU2430S700-WD 24.0 W 7 - 30 V 2 - 28 V 1000 mA 95% LDU2430S1000-WD Mechanical Details LDU08 Wired Versions LDU08: 14 Pin DIL 0.60 0.92 (23.4) (15.24) 0.55 (14.0) 0.55 (14.0) 0.10 1 0.40 (2.54) 8 2 (10.16) 0.40 0.40 0.55 Bottom View (10.16) (10.16) 1 2 7 (14.0) 0.20 0.40 0.27 0.12 16 21 8 9 Bottom View (5.08) 0.02 (10.16) (6.88) (3.05) 14 8 16 9 (0.50) 3.94 3.94 0.80 0.02 (100.0) (100.0) (20.32) 0.20 (0.50) (5.08) 0.39 Stripped (10.0) & tinned LDU24 Wired Versions LDU24 16 Pin DIL 0.92 (23.4) 0.92 (23.4) 0.55 (14.0) 0.55 (14.0) 0.55 (14.00) 10.16 10.16 0.12 0.40 (0.40) (0.40) 0.55 0.55 (3.05) (10.16) (14.0) (14.0) 16 21 89 DIA. 3.94 3.94 0.02 0.40 (100.0) (100.0) (0.50) (10.16) 1 0.11 8 0.70 2 (2.81) (17.78) 0.39 0.08 Bottom View Stripped (10.0) (1.92) & tinned 12 3 78 16 9 0.02 0.40 (0.50) Bottom View (10.16) 0.02 (0.5) 16 15 10 9 0.08 (1.92) 0.50 (12.70) 0.02 0.10 LDU Connections (2.54) (0.50) LDU08 LDU08-W LDU08-WD LDU24 LDU24-W LDU24-WD Function Notes 1 1 (Black) 1 (Black) 1 & 2 1 (Black) 1 (Black) -Vin: -DC supply 1. All dimensions are in inches (mm) 2 No Wire 2 (White) 3 No Wire 2 (White) Control 2. Weight: LDU08 - 0.006 lbs (2.6 g) approx. 7 8 (Blue) 8 (Blue) 7 & 8 8 (Blue) 8 (Blue) -Vout: LED cathode connection LDU08 (wired version) - 0.02 lbs (11.1 g) approx. 8 9 (Yellow) 9 (Yellow) 9 &10 9 (Yellow) 9 (Yellow) +Vout: LED anode connection LDU24 - 0.014 lbs (6.2 g) approx. LDU24 (wired version) - 0.02 lbs (11.1 g) approx. 14 16 (Red) 16 (Red) 15 & 16 16 (Red) 16 (Red) +Vin: +DC supply 3. Pin diameter: 0.020.002 (0.50.05) 4. Pin pitch tolerance: 0.014 (0.35) Note: LDU08: Do not connect Pin 1 (-Vin) to Pin 7 (-Vout). 5. Case tolerance: 0.02 (0.5) LDU24: Do not connect Pins 1 & 2 (-Vin) to Pins 7 & 8 (-Vout).