Features
Regulated
Converters
Rev.1
Description
●
●
●
●
●
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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 inde-
pendent 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 85°C.
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 25°C, 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~+85°C 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.
100μF
210 kHz min/ 260kHz typ./ 300kHz max
96% max.
Regulated at rated output current
300mA/350mA
-40°C to +85°C
500mA
-40°C to +80°C
600mA
-40°C to +75°C
700mA
-40°C to +71°C
-55°C to +125°C
100°C
Natural Convection
55°C/Watt
Epoxy (UL94-V0)
22.1 x 12.6 x 8.5mm
4.5g
Max. 265°C/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
RECOM [ RECOM INTERNATIONAL POWER ]
