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| Features Regulated Converters Rev.1 Description Constant Current Output Power LED Driver Wide Input Voltage Range PWM/Digital Dimming and Analogue Voltage Dimming Short Circuit Protected 96% Efficiency INNOLINE DC/DC-Converter RCD-24 Series 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 and 700mA 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 of 85C. Selection Guide Part Number RCD-24-0.30 RCD-24-0.35 RCD-24-0.50 RCD-24-0.60 RCD-24-0.70 Input Range (VDC) 4.5-36V 4.5-36V 4.5-36V 4.5-36V 4.5-36V Output Current (mA) 0-300 0-350 0-500 0-600 0-700 Output Voltage (V) 2-32 2-32 2-32 2-32 2-32 Dimming Control Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Efficiency max. (%) 96 96 96 96 96 Specifications ( typical at 25C, nominal input voltage, rated output current unless otherwise specified ) Input Voltage (absolute maximum) Recommended Input Voltage Input Filter Output Voltage Range Output Current Range Output Current Accuracy Internal Power Dissipation Output Current Stability Output Ripple and Noise (20MHz limited) Temperature Coefficient Maximum Capacitive Load Operating Frequency Efficiency at Full Load Short Circuit Protection Operating Temperature Range (free air convection) Vin=36V Vin - Vout >1.5~4V 300mA-700mA Load of 5 LEDs Vin=36V, Vout =2~32V Vin=36V, Vout =2~32V -40~+85C ambient 36VDC max. 5V min. / 24V typ. / 36VDC max. Capacitor 2V min. / 32V max. 300mA-700mA 2% typ. 700mW 1% max 120mVp-p max 0.015%/C max. 100F 210 kHz min/ 260kHz typ./ 300kHz max 96% max. Regulated at rated output current 300mA/350mA -40C to +85C 500mA -40C to +80C 600mA -40C to +75C 700mA -40C to +71C -55C to +125C 100C Natural Convection 55C/Watt Epoxy (UL94-V0) 22.1 x 12.6 x 8.5mm 4.5g Max. 265C/10 sec. continued on next page www.recom-international.com 2008 137 Non Conductive Black Plastic Derating Graph (Ambient Temperature) RCD-24-0.35/0.70 700 600 500 350 300 71 75 80 Natural Convection Ambient Temperature (C) 85 Maximum Case Temperature Thermal Impedance Case Material Potting Material Dimensions Weight Wave Soldering Profile Output Current (mA) Storage Temperature Range -40 -20 0 20 40 60 80 100 INNOLINE DC/DC-Converter Specifications -Continued PWM Dimming and ON/OFF Control (Leave open if not used) Remote ON/OFF DC/DC ON DC/DC OFF (Standby) DC/DC OFF (Shutdown) Remote Pin Drive Current Quiescent Input Current in Shutdown Mode Analogue Dimming Control (leave open if not used) Input Voltage Range Control Voltage Range Limits (see Graph) Analogue Pin Drive Current Environmental Relative Humidity Conducted Emissions Radiated Emissions ESD Radiated Immunity Fast Transient Conducted Immunity using MIL-HDBK 217F (all series, see note) (all series except 700mA) (all series) (all series) (all series) (all series) 5% to 95% RH, non-condensing EN55022 Class B EN55022 Class B EN61000-4-2 Class A EN61000-4-3 Class A EN61000-4-4 Class A EN61000-4-6 Class A +25C +71C 605 x 10 hours 516 x 10 hours Full On Full Off Vc=5V 0 - 15V 0.13V 50mV 4.5V 50mV 0.2mA max. Vr=5V Vin=36V, Vr>2.9V Open or 0V 50 100 RCD-24 Series Vin = 24V, Iout = 300-700mA Maximum PWM Frequency for Linear Operation (measured 10%~90% Dimming) 0 10 20 30 Output Voltage (V) Vin = 32V, Iout = 300-700mA 100 50 MTBF (RCD-24-0.70, Nominal Vin, Full Load) Efficiency (%) 0 10 20 30 Output Voltage (V) Note: Requires an input filter to meet EN55022 ClassB conducted emissions, see below. Class B Filter Suggestion +Vin 47H (not dimmed) or 120H (dimmed) 1 6 +LED 2.5F Elect. 10nF Cer. 4 RCD-24-xxx LED Driver 2 5 -LED -Vin 10nF, Cer. (only if Analogue Dimming is not used) 10nF, Cer. (only if Analogue Dimming is used) C1 or C2 138 2008 www.recom-electronic.com INNOLINE DC/DC-Converter Analogue Dimming Control and Application Circuit Examples RCD-24 Series 100% Analogue Input Voltage LED DRIVER with 0-10V Interface +Vin GND Analogue Dim 0-10VDC 2k4 3k3 RCD-24-xxx Output Current 1st LED Last LED 0% 0.13V 1V 2V 3V 4V 4.5V 15V Voltage Control (0-15V max) On/Off (Optional) LED DIMMER for up to 7 white LEDs 24VDC GND 4k7 Manual 1K Pot. Dimming Control RCD-24-xxx 1st LED Last LED Digital Dimming Control PWM Digital Control Signal 1 0 Output Current Max* 0 * Max output current can also be set using Analogue input PWM Digital Control Signal 1 0 0~ 200Hz PWM Digital Control Signal 1 0 0~ 200Hz Output Current (LED appears dim) Output Current (LED appears bright) www.recom-international.com 2008 139 INNOLINE DC/DC-Converter RCD-24 Series 3rd angle projection Package Style and Pinning Through Hole Case Style 22.10 8.50 4.1 0.6 17.5 Leave 1 mm space arround case on pcb 12.55 Pin Connections Pin # Out +Vin Analogue Dimming PWM/ON/OFF GND -Vout +Vout RCD-24 Series Comments DC Supply Leave open if not used Leave open if not used Do not connect to -Vout LED Cathode Connection LED Anode Connection 7.62 1 2 3 Recommended Footprint Details 4 5 6 1.00 o+0.15/0 5 4 3 Bottom View 2 6 1 XX.X 0.5 mm XX.XX 0.25 mm Pin Tolerance 0.1 mm 2.54 Top View 2.54 Standard Application Circuits LED DRIVER +Vin GND Analogue Dim PWM Dim/ On/Off RCD-24-xxx 1st LED Last LED MULTIPLE LED DRIVER (up to 20 LEDS) +Vin GND Analogue Dim PWM Dim/ On/Off Driving Two Strings of 350mA LEDs with one 700mA Driver. RCD-24-0.70 0.5~1.0 Ohm 1st LED Last LED 140 2008 www.recom-electronic.com |
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