Features
Regulated
Converters
●
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SMD Constant Current LED Driver
Built-in Class A or Class B EMC Filter
Wide Input and Output Voltage Range
Digital PWM and Analogue Voltage Dimming
Short Circuit and Overtemperature Protected
Low Cost
EN/RAILWAYS Certified
5 Year Warranty
LIGHTLINE
DC/DC-Converter
with 5 year Warranty
Description
The RCD-24-xxx/PL series is a step-down constant current source designed for driving high power LEDs.
The converter uses a pinless SMD open frame design to reduce cost and size. Output currents available are
300mA, 350mA, 500mA, 600mA, 700mA and 1000mA with either Class A (Suffix /A) or Class B (suffix /B)
built-in EMC filtering. Despite its compact size, the RCD-PL 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 ambient operating
temperature and is designed for strip lighting, wall washers and flourescent tube replacement designs, where
a low profile and narrow width are demanded.
Constant
Current LED
Driver
Selection Guide
Part
Number
RCD-24-0.30/PL*
RCD-24-0.35/PL*
RCD-24-0.50/PL*
RCD-24-0.60/PL*
RCD-24-0.70/PL*
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
(Vmin-Vmax)
2-35
2-35
2-35
2-35
2-35
Dimming
Control
Digital + Analogue
Digital + Analogue
Digital + Analogue
Digital + Analogue
Digital + Analogue
Mounting
Style
Pinless SMD
Pinless SMD
Pinless SMD
Pinless SMD
Pinless SMD
2011/65/EU
6/6
RoHS
E358085
EN-50121-3-2 Certified
EN-60950-1 Certified
UL-60950-1 Certified
RCD-24-1.00/PL/A 6-36V
0-1000
2-32
Digital + Analogue
Pinless SMD
* /A for EMC Class A input Filter
add -R for Tape and Reel Packaging
e.g. RCD-24-0.35/PL/B-R
* /B for EMC Class B input Filter
Note: RCD-24-1.00/PL/A only available with Class A Filter
Specifications
(typical at 25°C, nominal input voltage, rated output current unless otherwise specified )
Input Voltage (absolute maximum)
Recommended Input Voltage
Input Filter
40VDC max
6V min. / 24V typ. / 36VDC max
Suffix /A
Capacitor
Suffix /B
Class B with Pi Filter
RCD-24-1.00/PL/A
Class A with Pi Filter
Output Current Accuracy (Vin=24V) 300-700mA
±2% typ, ±3% max
1000mA
±3% typ, ±5% max
Internal Power Dissipation
Worst case load of 5 LEDs (300-700mA)
700mW max.
Worst case load of 8 LEDs (1000mA), Vin=36V
1.6W typ.
Output Current Stability
Vin = 36V, Vout = 1-9 LEDs (300-700mA)
±1% max
Vin = 36V, Vout = 1-8 LEDs (1000mA)
± 1.5% max.
Output Ripple and Noise (20MHz BW) Vin=36V, Vout =1-9 LEDs (300-700mA)
Vin=36V, Vout =1-8 LEDs (1000mA)
300mVp-p max
Temperature Coefficient
-40°C to +85°C ambient
±0.015%/°C max
Maximum Capacitive Load
100μF
Operating Frequency
300-1000mA
212kHz min/ 250kHz typ/ 280kHz max
Efficiency at Full Load
300-700mA
96% typ.
Vin=36V, Vout=8 LEDs (1000mA)
94% typ.
Short Circuit Protection
Regulated at rated output current
Operating Temperature Range
300/350mA
-40°C to +85°C
500mA
-40°C to +80°C
600/700mA
-40°C to +75°C
1000mA
-40°C to +65°C
Storage Temperature Range
-55°C to +125°C
Relative Humidity
5% to 95% RH, non-condensing
continued on next page
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REV: 1/2016
RCD-24/PL
Derating-Graph
(Ambient Temperature)
1000
Output Current (mA)
65
Natural Convection
700
600
500
75
80
85
350
300
-40 -20 0 20 40 60 80 100
Ambient Temperature (°C)
Refer to Application Notes
L-9
LIGHTLINE
DC/DC-Converter
Specifications
(typical at 25°C, nominal input voltage, rated output current unless otherwise specified )
Dimensions
Weight
Packing Quantity
Reflow Soldering Profile
MTBF
PWM Dimming and ON/OFF Control (Leave open if not used)
Remote ON/OFF
Threshold Voltages
Remote Pin Drive Current
Quiescent Input Current in Shutdown Mode
Recommended PWM Frequency
(measured 10%~90% Dimming)
Analogue Dimming Control (leave open if not used)
Input Voltage Range
Control Voltage Range Limits (see Graph)
300-1000mA
300-1000mA / Full On
300-700mA / Full Off
1000mA / Full Off
300-1000mA / Vc=5V
RCD-24-PL
Series
(using MIL HDBK 217F) +25°C
DC/DC ON
DC/DC OFF (Standby)
DC/DC OFF (Full Shutdown)
Vr=5V
Vin=36V
For Linear Operation
Maximum Frequency
31.0 x 11.4 x 6.6mm
1.9g
12 pcs per Tube / 400 pcs per Reel
265°C/10 sec max
>600 khours
Open or 0V<Vr<0.6V
0.6<Vr<2.9V
2.9V<Vr<6V
1mA max
200μA max
200Hz
1000Hz
-0.3V - 15V
0.13V ± 50mV
4.2V ± 150mV
4.35V ±100mV
0.2mA max.
EN61373
EN50121-3-2:2006
EN55022, Class A
EN55022, Class B
EN55022, Class B
EN61000-4-2, Criterion A
EN61000-4-3, Criterion A
EN61000-4-4, Criterion A
EN61000-4-6, Criterion A
Analogue Pin Drive Current
Environmental
Shock / Vibration
EMC Railways
Conducted Emissions
Radiated Emissions
ESD
Radiated Immunity
Fast Transient
Conducted Immunity
300-1000mA (/A Suffix)
300-700mA (/B Suffix)
RCD-PL
Note:
1. All LED Drivers may not be used without a load. They must be switched on the primary side only.
Noncompliance may damage the LED or reduce its lifetime.
2. It is not possible to parallel the drivers to increase the current.
Typical Characteristics
Vin = 24V, Iout = 300~1000mA
100
100
Vin = 32V, Iout = 300~1000mA
50
50
Efficiency (%)
Efficiency (%)
0
0
10
20
30
10
20
30
Output Voltage
(V)
Output Voltage
(V)
L-10
REV: 1/2016
www.recom-power.com
LIGHTLINE
DC/DC-Converter
Dimming
Digital Dimming
PWM Digital Control Signal
1
0
200Hz
Typ.
RCD-24-PL
Series
PWM Digital Control Signal
1
0
200Hz
Typ.
Output Current (LED appears dim)
Output Current (LED appears bright)
Vin
RCD-24-PL
GND
Analogue
PWM ON/OFF
C1
Vout+
Vout-
Note:
3. If PWM dimming is used, a capacitor on output in parallel is required.
P/N
RCD-24-0.30/PL/X
RCD-24-0.35/PL/X
RCD-24-0.50/PL/X
RCD-24-0.60/PL/X
RCD-24-0.70/PL/X
RCD-24-1.00/PL/A
C1
33μF
47μF
150μF
Analogue Dimming
100%
Analogue Input Voltage
Output Current
1000mA
RCD-PL
300-700mA
0%
0.13V
1V
2V
3V
4V
10V 15V
Voltage Control (0-15V max)
4.35V
4.2V
Package Style and Pinning
Class A Version
Class A (1.00A-Version)
Class B Version
6.6
1mm half Via x 6
9.0
6.6
Pad Connections
Pad #
1
Out
+Vin
Analogue Dimming
PWM/ON/OFF
GND
-Vout
+Vout
RCD-24-PL 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
PCB Layout Top View
2
3
4
5
6
31.00
25.4
4
3
2
1
Bottom View
5
6
1.9
7.6 11.4
2 x 2.5 SMT Pad x 6
XX.X ± 0.5 mm
XX.XX ± 0.25 mm
2.54
2.54
The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit
written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer
shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.
www.recom-power.com
REV: 1/2016
L-11
Microchip MCU
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