RCD-48
RCD-48
LIGHTLINE
DC/DC-Converter
with 5 year Warranty
Constant
Current
Buck LED
Driver
Selection Guide
Operating Input Voltage Range 9-60VDC
Absolute Maximum Input Voltage 65VDC max.
Output LED String Voltage Range 2V min. / 56V max.
(depand on the input voltage, defined by the output impedance, see Safe Operating Area)
Input Filter Capacitor
Output Current Accuracy ±3% typ. / ±5% max.
Internal Power Dissipation 350mA 0.8W typ.
(Vin=60V, Vout=56V) 500mA 1.0W typ.
700mA 1.1W typ.
1000mA 1.3W typ.
1200mA 1.4W typ.
Output Current Stability Vin=60V, Vout=2-56V, Iout=350-1200mA ±1% max.
Output Ripple and Noise (20MHz BW) Vin=60V, Vout=2-56V, Iout=350-1200mA 300mVp-p max.
Maximum Capacitive Load 100μF max.
Switching Frequency 50kHz min. / 1000kHz max.
Efficiency at Full Load 96% typ.
PWM DIMMING CONTROL & REMOTE ON/OFF CONTROL
Input Voltage Range 5V typ. / 10V max.
Threshold Voltage Device ON 0.5V max.
Device OFF 2.0V min.
PWM Frequency For Linear Operation 200Hz max.
Frequency Limit 1000Hz max.
ANALOGUE DIMMING CONTROL (Leave open if not used - do not tie to +V
in)
Input Voltage Range 0V min. / 10V max.
Control Voltage Range 0V min. / 5.1V max.
Note: The analogue dimming range is from 0% to 100%, but the output can be unstable below 10%, when using the analo-
gue dimming function.
Analogue Pin Drive Current Vc=5V 0.2mA max.
Vref Version Vref Voltage 5V -5%/+10%
Vref Output Current 0.15mA max.
Vref Output Short Circuit Current 2mA typ.
Ambient Temperature 350mA -40°C to +80°C
(free air convection) 500mA -40°C to +80°C
700mA -40°C to +75°C
1000mA -40°C to +60°C
1200mA -40°C to +50°C
Analogue and PWM Dimming Control Note: Leave open if not used - do not tie to +Vin continued on next page
Specifications
(typical at 25°C, nominal input voltage, rated output current unless otherwise specified
)
Description
The RCD-48 series is a step-down constant current source designed for driving high power LED applications.
Four output currents are available. The maximum output voltage is 56V. The buck drivers have digital PWM
and/or analogue voltage dimming control and are special featured with very high efficiency. Typical applications
are 48V bus lighting solutions or high voltage LED arrays (e.g. high bay lights).
● 70W Buck LED Driver
● Constant Current Output (350 to 1200mA)
● Digital PWM and Analogue Voltage Dimming
● High Efficiency to 96%
● EN, UL and RAILWAYS Certified
● Metal or Plastic Case Version
● IP67 Rated for /W, Plastic Case Version
Features
LED DRIVER
Part Input Output Output Dimming Efficiency
Number Range Current Voltage Control Typ.
(VDC) (mA) (VDC) (%)
RCD-48-0.35* 9-60 0-350 2-56 Digital + Analogue 96
RCD-48-0.50* 9-60 0-500 2-56 Digital + Analogue 96
RCD-48-0.70* 9-60 0-700 2-56 Digital + Analogue 96
RCD-48-1.00* 9-60 0-1000 2-56 Digital + Analogue 96
RCD-48-1.20/M 9-60 0-1200 2-56 Digital + Analogue 96
*add suffix “/W“ for wired version with Vref output and analogue + PWM dimming control (seven wires)
Note: Add suffix “/M“ for metal case (RCD-48-1.20/M only). No metal case with wires available.
Standard version (no suffix) and wired version (suffix /W) only in plastic case.
EN-50121-3-2 Certified
EN-60950-1 Certified
UL-60950-1 Certified
E224736
RoHS
2011/65/EU
6/6
Refer to Application Notes
Derating-Graph
(Ambient Temperature)
L-12 www.recom-power.comREV: 1/2016
