INNOLINE
DC/DC-Converter
RCD-24
www.recom-international.com I-49
REV:2/2009
EN-60950-1 Certified
UL-60950-1 Pending
Constant
Current
Single
Output
●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
Features
Regulated
Converters
Selection Guide
Input Voltage (absolute maximum) 36VDC max
Recommended Input Voltage 5V min. / 24V typ. / 36VDC max
Input Filter Capacitor
Output Voltage Range Vin=36V 2V min. / 32V max
Output Current Range Vin - Vout >1.3V 300mA-1200mA
Output Current Accuracy 300mA-1000mA ±2% typ
1200mA ±3% typ
Internal Power Dissipation Worst case load of 5 LEDs 800mW max
Output Current Stability Vin=36V, Vout =1-9 LEDs ±1% max
Output Ripple and Noise (20MHz limited) 300mA-1000mA 120mVp-p max
Vin=36V, Vout =1-9 LEDs 1200mA 200mVp-p max
Temperature Coefficient -40°C~+85°C ambient ±0.015%/°C max
Maximum Capacitive Load 100μF
Operating Frequency <1A 210kHz min/ 260kHz typ/ 300kHz max
1A, 1.2A 350kHz min/ 450kHz typ/ 550kHz max
Efficiency at Full Load 96% max.
Short Circuit Protection Regulated at rated output current
Operating Temperature Range 300mA/350mA -40°C to +85°C
(free air convection) 500mA -40°C to +80°C
600mA -40°C to +75°C
700mA/1000mA -40°C to +71°C
1200mA -40°C to +65°C
Storage Temperature Range -55°C to +125°C
continued on next page
Specifications
( typical at 25°C, nominal input voltage, rated output current unless otherwise specified )
Description
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.
Derating Graph
(Ambient Temperature)
Part Input Output Output Dimming Mounting
Number Range Current Voltage Control Style
(VDC) (mA) (V)
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)