● ● ● ● ● ● ● Features Regulated Converters UL Certified Constant Current LED Driver Wide Input and Output Voltage Range Digital PWM and Analogue Voltage Dimming Short Circuit and Overtemperature Protected Pin, Wire or Open Frame SMD Versions IP67 rated for /W Version 96% Efficiency INNOLINE DC/DC-Converter Description Constant Current LED Driver 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. Options include an IP67 wired version (/W) and an open frame version with SMD pins (/SMD/OF Option). Selection Guide Part Number Input Range (VDC) Output Output Current Voltage (mA) (Vmin-Vmax) Dimming Control Mounting Style RCD-24-0.30** 4.5-36V 0-300 2-35 Digital + Analogue SMD, Pins or Wired RCD-24-0.35** 4.5-36V 0-350 2-35 Digital + Analogue SMD, Pins or Wired RCD-24-0.50** 4.5-36V 0-500 2-35 Digital + Analogue SMD, Pins or Wired RCD-24-0.60** 4.5-36V 0-600 2-35 Digital + Analogue SMD, Pins or Wired RCD-24-0.70** 4.5-36V 0-700 2-35 Digital + Analogue SMD, Pins or Wired RCD-24-1.00** 6-36V 0-1000 3-33 Digital + Analogue Pins or Wired RCD-24-1.20** 6-36V 0-1200 ** No suffix is standard with PCB Pins. 3-33 Digital + Analogue Pins or Wired RoHS 2002/95/EC 6/6 E224736 EN-60950-1 Certified UL-60950-1 Certified ** Add suffix /SMD/OF for open frame version with SMD solderpins ** Add suffix /SMD/OF-R for open frame version with SMD solderpins packed in Tape and Reel (SMD versions available in 300mA ~ 700mA only) RCD-24 ** Add suffix /W for standard 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) ( typical at 25°C, nominal input voltage, rated output current unless otherwise specified ) Input Voltage (absolute maximum) Recommended Input Voltage 300mA-700mA 1A-1.2A 40VDC max 5V min. / 24V typ. / 36VDC max 6V min. / 24V typ. / 36VDC max Input Filter Output Current Accuracy (Vin = 24DC) 300mA-700mA 1A-1.2A Capacitor ±1% typ, ±3% max. ±2% typ, ±5% max. Internal Power Dissipation Worst case load of 5 LEDs 800mW max Output Current Stability Output Ripple and Noise (20MHz BW) Vin=36V, Vout =1-9 LEDs Vin=36V, Vout =1-9 LEDs 300mA-700mA 1A-1.2A ±1% max 120mVp-p max 200mVp-p max Temperature Coefficient Maximum Capacitive Load Operating Frequency -40°C~+85°C ambient 300mA-700mA 1A-1.2A ±0.015%/°C max 100μF 210kHz min/ 260kHz typ/ 300kHz max 350kHz min/ 450kHz typ/ 550kHz max Efficiency at Full Load Short Circuit Protection 96% max. Regulated at rated output current continued on next page www.recom-international.com REV:1/2010 Derating Graph (Ambient Temperature) 65 1200 1100 1000 900 Output Current (mA) Specifications 800 71 Natural Convection 700 600 500 75 80 85 350 300 -40 -20 0 20 40 60 80 100 Ambient Temperature (°C) Refer to Application Notes I-53 RCD-24 Series INNOLINE DC/DC-Converter Specifications -Continued Storage Temperature Range Overtemperature Shutdown (Auto-restart after cool down) Maximum Case Temperature 300mA-350mA 500mA 600mA 700mA-1A 1.2A -40°C to +85°C -40°C to +80°C -40°C to +75°C -40°C to +71°C -40°C to +65°C Internal IC Temperature Temperature Hysteresis -55°C to +125°C 150°C typ. 20°C typ. 100°C Natural Convection 55°C/Watt Thermal Impedance Case Material (Pinned or Wired Versions) Potting Material (Pinned or Wired Versions) Dimensions Weight Soldering Profile Packing Quantities RCD-24 (Refer to App Notes for Tube sizes) Digital Dimming PWM Digital Control Signal 1 0 50~ 200Hz Typ. Output Current (LED appears dim) Non Conductive Black Plastic Pinned or Wired Versions SMD Pinned or Wired Versions SMD Pinned or Wired Versions SMD Pinned Versions SMD Versions Wired Versions PWM Dimming and ON/OFF Control (Leave open if not used) Remote ON/OFF DC/DC ON 300mA-700mA Threshold Voltages 1A-1.2A DC/DC OFF (Standby) 300mA-700mA 1A-1.2A DC/DC OFF (Shutdown) 300mA-700mA 1A-1.2A Remote Pin Drive Current Vr=5V Quiescent Input Current in Shutdown Mode Maximum PWM Frequency (measured 10%~90% Dimming) Epoxy (UL94-V0) 22.1 x 12.6 x 8.5mm 21.0 x 11.4 x 10mm 4.5g 1.9g 265°C/10 sec. max 245°C/30 sec. max 39pcs per Tube 32pcs per Tube 400pcs per Reel 5pcs per Bag 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 200μA max 20 -200Hz 2000Hz /W Versions Conducted Emissions (all series, see note) Radiated Emissions (all series except 700mA) ESD (all series) Radiated Immunity (all series) Fast Transient (all series) Conducted Immunity (all series) MTBF (RCD-24-0.70, Nominal Vin, Full Load) using MIL-HDBK 217F 0 Full On Full Off Vc=5V 50~ 200Hz Typ. Output Current (LED appears bright) Analogue Dimming Analogue Input Voltage 100% 0.13V -0.3V - 15V 0.13V ± 50mV 4.5V ± 50mV 0.2mA max. Environmental Relative Humidity 1 0% Analogue Dimming Control (leave open if not used) Input Voltage Range Control Voltage Range Limits (see Graph) Analogue Pin Drive Current PWM Digital Control Signal Output Current Operating Temperature Range (free air convection) 1V 2V 3V 4V 10V 4.5V 15V Voltage Control (0-15V max) Combined PWM and Analogue Dimming 5% to 95% RH, non-condensing EN55022 EN55022 EN61000-4-2 EN61000-4-3 EN61000-4-4 EN61000-4-6 +25°C +71°C IP67 Class B Class B Class A Class A Class A Class A 605 x 10³ hours 516 x 10³ hours PWM Digital Control Signal 1 0 Output Current Max* 0 * Max output current can also be set using Analogue input Note: Requires an input filter to meet EN55022 ClassB conducted emissions - see next page I-54 REV: 1/2010 www.recom-electronic.com RCD-24 Series INNOLINE DC/DC-Converter Typical Characteristics Class B Filter Suggestion L1 +Vin C1 = 2.2µF Elect. Low ESR C2 C2* -Vin 6 +LED 5 -LED RCD-24-xxx LED Driver 4 2 3 RCD-24 RCD-24-0.30 - RCD-24-0.70 No dimming or PWM dimming only: L1 = 47μH C2 = C3 = 10nF MLCC Other caps not required 1 C3 Analogue Dimming used: L1 = 120μH C2 = C7 = 10nF MLCC Other caps not required C4 C5 C6 C7 RCD-24-1.00 - RCD-24-1.20 L1 = 220μH C2 = 10nF MLCC C3 = C5 = 2.2nF MLCC C4 = C6 = C7 = C8 = 100nF MLCC C8 C2* = optional 2μ2 MLCC required only if L1 starts to resonate with the back ripple current. C2* Vin+ L1 C1 Recommended PCB Layout for Pinned / SMD Versions www.recom-international.com VinREV:1/2010 C3 C5 Pin 1 C2 Top View C8 LED+ C7 LED- C4 C6 I-55 RCD-24 Series INNOLINE DC/DC-Converter Application Examples Standard Application LED DRIVER with 0-10V Interface LED DIMMER for up to 7 white LEDs +Vin 24VDC RCD-24-xxx GND 1st LED 2k4 Analogue Dim 0-10VDC RCD-24-xxx GND 1st LED 4k7 3k3 Manual 1K Pot. Dimming Control Last LED Last LED On/Off (Optional) LED DIMMER with high frequency PWM control MULTIPLE LED DRIVER (up to 20 LEDS) +Vin RCD-24-0.70 +Vin 1st LED GND Analogue Dim Last LED PWM Dim/ On/Off RCD-24-xxx GND 10kHz TTL PWM 2x NPN 0.5~1.0 Ohm C R Ana. Dimming 1st LED Last LED Driving Two Strings of 350mA LEDs with one 700mA Driver using a current mirror RGB Driver Automatic LED Overtemperature Protection 24VDC RCD-24-xxx 4k7 4k7 4V7 Zener 1st LED Analog Dimming PTC Thermistor Last LED GND Thermally connected Typical Response Curve (PTC = 500 Ohm @ 70°C) 100% Output Current RCD-24 LED Temperature Monitoring 0% 25 I-56 50 70 60 LED Temperature (°C) 80 90 REV:1/2010 www.recom-electronic.com RCD-24 Series INNOLINE DC/DC-Converter Package Style and Pinning Pinned Version 3rd angle projection 22.10 12.55 Pin Connections 8.50 4.1 0.6 7.62 17.5 1.00 ø+0.15/0 5 4 3 Bottom View 2 6 1 RCD-24 Series Pin # Out Comments 1 +Vin DC Supply 2 Analogue Dimming Leave open if not used 3 PWM/ON/OFF Leave open if not used 4 GND Do not connect to -Vout 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 2.54 Leave 1 mm space arround case on PCB Top View 2.54 Recommended Footprint Details SMD Version 1.8 3.380 21.00 17.8 1.9 3rd angle projection 3.180 1.90 2.54 1.90ø SMT Pad Pin Connections Pin # 7.6 RCD-24 1.0 6.6 5 4 3 Bottom View 2 6 1 Solderball Pin after Reflow 11.42 2.54 Top View 2.54 RCD-24 SMD Series 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 XX.XXX ± 0.01 mm The reference codes for standard parts are: Due to the compact size of the Open Frame version, a product code label is used instead of the whole part number. The product code consists of RCD xxxx (where xxxx is the datecode) followed by an 8 digit reference code, e.g. RCD 1001 80999186 www.recom-international.com = RCD-24-0.35/SMD/OF, manufactured in Week 1 of 2010. REV:1/2010 RCD-24-0.30/SMD/OF = 80999199 RCD-24-0.35/SMD/OF = 80999186 RCD-24-0.50/SMD/OF = 80999200 RCD-24-0.60/SMD/OF = 80999201 RCD-24-0.70/SMD/OF = 80999202 Other custom or semi-custom parts may have different reference codes. I-57 RCD-24 Series INNOLINE DC/DC-Converter Package Style and Pinning 3rd angle projection Wired Versions Wire Connections 17.5 5 4 1 Bottom View /W Version 7.6 6 RCD-24/W Series Wire # Function 1 (Red) +Vin Comments 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 17.5 5 4 3 Bottom View /W/X2 Version 6 1 7.6 RCD-24/W/X Series Wire # Function 2 (Green) Ana Dimming Comments /X1 3 (Blue) PWM Dimming /X2 2 + 3 (Green + Blue) Ana + PWM Dimming /X3 Wire length = 100mm + 10mm stripped & tinned = 110mm total RCD-24 Wire outside diameter = 1.6mm Wire core diameter = 0.75mm 17.5 5 4 3 Bottom View 2 /W/X3 Version 6 1 Wire is UL/CSA listed/ 22AWG / 300V Rated 7.6 Wired Versions are packed in bags - 5pcs per bag. I-58 REV: 1/2010 www.recom-electronic.com