Features Regulated Converters Constant Current Output LED Driver Wide Input Voltage Range PWM/Digital Dimming and Analogue Voltage Dimming Short Circuit and Overtemp. Protected IP67 rated for /W Version 96% Efficiency INNOLINE DC/DC-Converter Description Constant Current Single Output The RCD series is a step-down constant current source designed for driving high power white LEDs. Standard output currents available are 300mA, 350mA, 500mA, 600mA, 700mA, 1A and 1.2A to make this driver compatible with a wide range of LEDs from many different manufacturers without the need for any external components. Despite its compact size, the RCD series is fully featured with very high efficiency, wide input voltage range, high ambient operating temperature and two means of LED dimming: PWM/digital control and analogue voltage dimming. Both dimming controls are independent and can be combined. The driver is also designed to be as reliable as the LEDs it is driving, even at the full operating temperature. A wired version is also available (/W Option) which has been tested to meet IP67. Selection Guide Part Number Input Range (VDC) Output Current (mA) Output Voltage (V) Dimming Control Mounting Style RCD-24-0.30** 4.5-36V 0-300 2-34 Digital + Analogue PCB or Wired RCD-24-0.35** 4.5-36V 0-350 2-34 Digital + Analogue PCB or Wired RCD-24-0.50** 4.5-36V 0-500 2-34 Digital + Analogue PCB or Wired RCD-24-0.60** 4.5-36V 0-600 2-34 Digital + Analogue PCB or Wired RCD-24-0.70** 4.5-36V 0-700 2-34 Digital + Analogue PCB or Wired RCD-24-1.00** 4.5-36V 0-1000 2-34 Digital + Analogue PCB or Wired RCD-24-1.20** 4.5-36V 0-1200 2-34 Digital + Analogue PCB or Wired ** Add suffix /W for wired version without dimming control (four wires) ** Add suffix /W/X1 for wired version with analogue dimming control (five wires) ** Add suffix /W/X2 for wired version with PWM dimming control (five wires) ** Add suffix /W/X3 for wired version with both analogue and PWM dimming controls (six wires) EN-60950-1 Certified UL-60950-1 Pending Specifications RCD-24 ( typical at 25C, nominal input voltage, rated output current unless otherwise specified ) Input Voltage (absolute maximum) 36VDC max Recommended Input Voltage 5V min. / 24V typ. / 36VDC max Input Filter Capacitor Output Voltage Range Vin=36V Output Current Range Output Current Accuracy Vin - Vout >1.3V 300mA-1000mA 1200mA 2V min. / 32V max Internal Power Dissipation Worst case load of 5 LEDs 800mW max Output Current Stability Output Ripple and Noise (20MHz limited) Vin=36V, Vout =1-9 LEDs Vin=36V, Vout =1-9 LEDs 300mA-1000mA 1200mA 1% max 120mVp-p max 200mVp-p max Temperature Coefficient -40C~+85C ambient 300mA-1200mA 2% typ 3% typ 0.015%/C max Operating Frequency Storage Temperature Range <1A 210kHz min/ 260kHz typ/ 300kHz max 1A, 1.2A 350kHz min/ 450kHz typ/ 550kHz max 96% max. 300mA/350mA 500mA 600mA 700mA/1000mA 1200mA Regulated at rated output current -40C to +85C -40C to +80C -40C to +75C -40C to +71C -40C to +65C -55C to +125C continued on next page www.recom-international.com 1200 100F Efficiency at Full Load Short Circuit Protection Operating Temperature Range (free air convection) (Ambient Temperature) REV:2/2009 1000 Output Current (mA) Maximum Capacitive Load Derating Graph 71 700 600 500 Natural Convection 75 80 85 350 300 -40 -20 0 20 40 60 80 100 Ambient Temperature (C) I-49 RCD-24 Series INNOLINE DC/DC-Converter Specifications -Continued Maximum Case Temperature Overtemperature Shutdown (Auto-restart after cool down) 100C 150C typ. 20C typ. Internal IC Temperature Temperature Hysteresis Thermal Impedance Natural Convection Case Material 55C/Watt Digital Dimming PWM Digital Control Signal Non Conductive Black Plastic Potting Material 1 Epoxy (UL94-V0) Dimensions 0 22.1 x 12.6 x 8.5mm Weight Output Current (LED appears dim) 4.5g Wave Soldering Profile 50~ 200Hz Typ. Max. 265C/10 sec. PWM Dimming and ON/OFF Control (Leave open if not used) Remote ON/OFF DC/DC ON 300mA-700mA Threshold Voltages 1000mA-1200mA DC/DC OFF (Standby) 300mA-700mA 1000mA-1200mA DC/DC OFF (Shutdown) 300mA-700mA 1000mA-1200mA Remote Pin Drive Current Vr=5V Quiescent Input Current in Shutdown Mode Maximum PWM Frequency (measured 10%~90% Dimming) Open or 0V<Vr<0.6V Open or 0V<Vr<0.8V 0.6<Vr<2.9V 1.4<Vr<2.2V 2.9V<Vr<6V 2.2V<Vr<15V 1mA max Vin=36V For Linear Operation Maximum Frequency PWM Digital Control Signal 1 0 50~ 200Hz Typ. Output Current (LED appears bright) 200A max 20 -200Hz 2000Hz Analogue Dimming Control (leave open if not used) Input Voltage Range Control Voltage Range Limits (see Graph) Analogue Pin Drive Current -0.3V - 15V 0.13V 50mV 4.5V 50mV 0.2mA max. Full On Full Off Vc=5V Analogue Dimming /W Versions Conducted Emissions Radiated Emissions ESD Radiated Immunity Fast Transient Conducted Immunity 5% to 95% RH, non-condensing (all series, see note) (all series except 700mA) (all series) (all series) (all series) (all series) IP67 Class B Class B Class A Class A Class A Class A EN55022 EN55022 EN61000-4-2 EN61000-4-3 EN61000-4-4 EN61000-4-6 MTBF (RCD-24-0.70, Nominal Vin, Full Load) +25C 605 x 10 hours using MIL-HDBK 217F +71C 516 x 10 hours Analogue Input Voltage 100% Output Current RCD-24 Environmental Relative Humidity 0% 0.13V 1V 2V 3V 4V 10V 4.5V 15V Voltage Control (0-15V max) Note: Requires an input filter to meet EN55022 ClassB conducted emissions. Typical Application Circuit LED DRIVER with 0-10V Interface PWM Digital Control Signal +Vin GND Analogue Dim 0-10VDC 1 RCD-24-xxx 2k4 1st LED Output Current 3k3 Last LED On/Off (Optional) I-50 0 Max* 0 * Max output current can also be set using Analogue input REV: 2/2009 www.recom-electronic.com RCD-24 Series INNOLINE DC/DC-Converter More Application Circuit Examples LED DIMMER for up to 7 white LEDs MULTIPLE LED DRIVER (up to 20 LEDS) 24VDC +Vin RCD-24-xxx GND 4k7 1st LED Manual 1K Pot. Dimming Control GND RCD-24-0.70 1st LED Analogue Dim Last LED PWM Dim/ On/Off Last LED 2x NPN 0.5~1.0 Ohm Driving Two Strings of 350mA LEDs with one 700mA Driver using a current mirror Typical Characteristics RCD-24 www.recom-international.com REV:2/2009 I-51 RCD-24 Series INNOLINE DC/DC-Converter Class B Filter Suggestion RCD-24-0.30 - RCD-24-0.70 No dimming or PWM dimming only: L1 = 47H C2 = C3 = 10nF MLCC Other caps not required +Vin Analogue Dimming used: L1 = 120H C2 = C7 = 10nF MLCC Other caps not required -Vin C1 = 2.5F Elect. L1 1 C2 C2* 6 +LED 5 -LED RCD-24-xxx LED Driver 4 2 3 C3 C4 RCD-24-1.00 - RCD-24-1.20 L1 = 220H C2 = 10nF MLCC C3 = C5 = 2.2nF MLCC C4 = C6 = C7 = C8 = 100nF MLCC C5 C6 C7 C8 RCD-24 C2* = optional 22 MLCC required only if L1 starts to resonate with the back ripple current. Effect depends on L1 supplier and is not due to Recom. Recommended PCB Layout Vin+ L1 C1 C2 C3 C4 C7 LED+ C8 LED- C5 C6 VinTop View I-52 REV: 2/2009 www.recom-electronic.com RCD-24 Series INNOLINE DC/DC-Converter Package Style and Pinning 3rd angle projection 22.10 12.55 Pin Connections 8.50 4.1 0.6 17.5 RCD-24 Series Pin # 7.62 1.00 o+0.15/0 5 4 3 Bottom View 2 6 1 Out Comments 1 +Vin DC Supply 2 Analogue Dimming 3 PWM/ON/OFF Leave open if not used 4 GND Do not connect to -Vout Leave open if not used 5 -Vout LED Cathode Connection 6 +Vout LED Anode Connection XX.X 0.5 mm XX.XX 0.25 mm Pin Tolerance 0.1 mm Leave 1 mm space arround case on PCB 2.54 Top View 2.54 Recommended Footprint Details 17.5 5 4 1 Wire Connections Bottom View /W Version 7.6 6 RCD-24/W Series Function Comments 1 (Red) +Vin DC Supply 4 (Black) GND Do not connect to -Vout 5 (Brown) -Vout LED Cathode Connection 6 (Yellow) +Vout LED Anode Connection Wire length = 100mm + 10mm stripped & tinned = 110mm total Wire outside diameter = 1.6mm Wire core diameter = 0.75mm Wire is UL/CSA listed/ 22AWG / 300V Rated 17.5 5 4 Bottom View 2 /W/X1 Version 6 1 7.6 Wire Connections Wire # 17.5 5 4 3 Bottom View /W/X2 Version 6 1 7.6 RCD-24/W/X Series Function Comments 2 (Green) Ana Dimming /X1 or /X3 3 (Blue) PWM Dimming /X2 or /X3 Wire length = 100mm + 10mm stripped & tinned = 110mm total Wire outside diameter = 1.6mm Wire core diameter = 0.75mm Wire is UL/CSA listed/ 22AWG / 300V Rated 17.5 5 4 3 Bottom View 2 /W/X3 Version 6 1 7.6 www.recom-international.com REV:2/2009 I-53 RCD-24 Wire #