Datasheet

1200
300
1000
Ambient Temperature Range (°C)
Output Current (mA)
-40 0 20 40 50 80 100
350
500
700
80
50
75
Natural Convection
1
www.recom-electronic.com
REV: 1/2011
RCD-48
Please Read Application Notes
RCD-48
RoHS
2002/95/EC
6/6
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.
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.
Frequency 200Hz min. / 1000Hz max.
Remote Pin Drive Current VPWM = 5V 0.5mA 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.
Analogue Pin Drive Current V
analogue = 5V 0.2mA max.
Note: The analogue dimming range is from 0% to 100%, but the output can be unstable below 10%, when using the
analogue dimming function.
Ambient Temperature 350mA -40°C to +80°C
(free air convection) 500mA -40°C to +80°C
700mA -40°C to +75°C
1200mA -40°C to +50°C
Analogue and PWM Dimming Control Note: Leave open if not used - do not tie to +Vin
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 60V. 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 and UL (pending)
● Metal or Plastic Case Version
● Through Hole Case or Wired Version
● 5 Year Warranty
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-48-1.20/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.
Derating Graph
EN-60950-1 (pending)
UL-60950-1 (pending)