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Features
Regulated Converters
Description

UL Certified Constant Current LED Driver Wide Input and Output Voltage Range Digital PWM and Analogue Voltage Dimming Short Circuit and Overtemperature Protected Pin, Wire or Open Frame SMD Versions IP67 rated for /W Version 96% Efficiency
INNOLINE
DC/DC-Converter
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. Options include an IP67 wired version (/W) and an open frame version with SMD pins (/SMD/OF Option).
Constant Current LED Driver
Selection Guide
Part Number RCD-24-0.30** RCD-24-0.35** RCD-24-0.50** RCD-24-0.60** RCD-24-0.70** RCD-24-1.00** Input Range (VDC) 4.5-36V 4.5-36V 4.5-36V 4.5-36V 4.5-36V 6-36V Output Output Current Voltage (mA) (Vmin-Vmax) 0-300 0-350 0-500 0-600 0-700 0-1000 2-35 2-35 2-35 2-35 2-35 3-33 3-33 Dimming Control Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Digital + Analogue Mounting Style SMD, Pins or Wired SMD, Pins or Wired SMD, Pins or Wired SMD, Pins or Wired SMD, Pins or Wired Pins or Wired Pins or Wired
2002/95/EC 6/6
RoHS
RCD-24-1.20** 6-36V 0-1200 ** No suffix is standard with PCB Pins.
E224736 EN-60950-1 Certified UL-60950-1 Certified
** Add suffix /SMD/OF for open frame version with SMD solderpins ** Add suffix /SMD/OF-R for open frame version with SMD solderpins packed in Tape and Reel (SMD versions available in 300mA ~ 700mA only) ** Add suffix /W for standard 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)
RCD-24
Derating Graph
(Ambient Temperature)
1200 1100 1000 900 800 700 600 500 75 80 65 71 Natural Convection
Specifications
( typical at 25C, nominal input voltage, rated output current unless otherwise specified )
Input Voltage (absolute maximum) Recommended Input Voltage Input Filter Output Current Accuracy (Vin = 24DC) Internal Power Dissipation Output Current Stability Output Ripple and Noise (20MHz BW) Vin=36V, Vout =1-9 LEDs Temperature Coefficient Maximum Capacitive Load Operating Frequency Efficiency at Full Load Short Circuit Protection www.recom-international.com 40VDC max 5V min. / 24V typ. / 36VDC max 6V min. / 24V typ. / 36VDC max Capacitor 1% typ, 3% max. 2% typ, 5% max. 800mW max 1% max 120mVp-p max 200mVp-p max 0.015%/C max
300mA-700mA 1A-1.2A 300mA-700mA 1A-1.2A Worst case load of 5 LEDs Vin=36V, Vout =1-9 LEDs 300mA-700mA 1A-1.2A -40C~+85C ambient 300mA-700mA 1A-1.2A
100F 210kHz min/ 260kHz typ/ 300kHz max 350kHz min/ 450kHz typ/ 550kHz max 96% max. Regulated at rated output current continued on next page REV:1/2010
Output Current (mA)
85 350 300 -40 -20 0 20 40 60 80 100 Ambient Temperature (C)
Refer to Application Notes
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DC/DC-Converter
Specifications -Continued
Operating Temperature Range (free air convection) 300mA-350mA 500mA 600mA 700mA-1A 1.2A Internal IC Temperature Temperature Hysteresis Natural Convection -40C to +85C -40C to +80C -40C to +75C -40C to +71C -40C to +65C -55C to +125C 150C typ. 20C typ. 100C 55C/Watt Non Conductive Black Plastic Pinned or Wired Versions SMD Pinned or Wired Versions SMD Pinned or Wired Versions SMD Pinned Versions SMD Versions Wired Versions Epoxy (UL94-V0) 22.1 x 12.6 x 8.5mm 21.0 x 11.4 x 10mm 4.5g 1.9g 265C/10 sec. max 245C/30 sec. max 39pcs per Tube 32pcs per Tube 400pcs per Reel 5pcs per Bag Open or 0VRCD-24 Series
Digital Dimming
PWM Digital Control Signal 1 0
50~ 200Hz Typ.
Storage Temperature Range Overtemperature Shutdown (Auto-restart after cool down) Maximum Case Temperature Thermal Impedance Case Material (Pinned or Wired Versions) Potting Material (Pinned or Wired Versions) Dimensions Weight Soldering Profile Packing Quantities
Output Current (LED appears dim)
PWM Digital Control Signal 1 0
50~ 200Hz Typ.
Output Current (LED appears bright)
(Refer to App Notes for Tube sizes)
PWM Dimming and ON/OFF Control (Leave open if not used) Remote ON/OFF DC/DC ON 300mA-700mA Threshold Voltages 1A-1.2A DC/DC OFF (Standby) 300mA-700mA 1A-1.2A DC/DC OFF (Shutdown) 300mA-700mA 1A-1.2A Remote Pin Drive Current Vr=5V Quiescent Input Current in Shutdown Mode Maximum PWM Frequency (measured 10%~90% Dimming) Analogue Dimming Control (leave open if not used) Input Voltage Range Control Voltage Range Limits (see Graph) Analogue Pin Drive Current Environmental Relative Humidity /W Versions Conducted Emissions (all series, see note) Radiated Emissions (all series except 700mA) ESD (all series) Radiated Immunity (all series) Fast Transient (all series) Conducted Immunity (all series) MTBF (RCD-24-0.70, Nominal Vin, Full Load) using MIL-HDBK 217F Full On Full Off Vc=5V Vin=36V For Linear Operation Maximum Frequency
Analogue Dimming
RCD-24
100%
Analogue Input Voltage
Output Current
0% 0.13V
1V
2V
3V
4V
10V 4.5V 15V
Voltage Control (0-15V max)
Combined PWM and Analogue Dimming
PWM Digital Control Signal 1 0 Output Current Max* 0
* Max output current can also be set using Analogue input
Note: Requires an input filter to meet EN55022 ClassB conducted emissions - see next page
I-54
REV: 1/2010
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DC/DC-Converter
Typical Characteristics
RCD-24 Series
Class B Filter Suggestion
L1 1 C2* 6 +LED
+Vin
RCD-24-0.30 - RCD-24-0.70 No dimming or PWM dimming only: L1 = 47H C2 = C3 = 10nF MLCC Other caps not required Analogue Dimming used: L1 = 120H C2 = C7 = 10nF MLCC Other caps not required RCD-24-1.00 - RCD-24-1.20 L1 = 220H C2 = 10nF MLCC C3 = C5 = 2.2nF MLCC C4 = C6 = C7 = C8 = 100nF MLCC C2* = optional 22 MLCC required only if L1 starts to resonate with the back ripple current.
C1 = 2.2F Elect. Low ESR -Vin
C2
RCD-24-xxx LED Driver
4 2 3 5 -LED
RCD-24
C3 C4 C5 C6 C7 C8
C2* Vin+ C1
Recommended PCB Layout for Pinned / SMD Versions
Top View
L1 C3 C5
Pin 1
C2 C4 C6
C8
LED+
VinREV:1/2010
C7
LED-
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I-55
INNOLINE
DC/DC-Converter
Application Examples Standard Application
LED DRIVER with 0-10V Interface
+Vin GND Analogue Dim 0-10VDC On/Off (Optional) 2k4 3k3 RCD-24-xxx
RCD-24 Series
LED DIMMER for up to 7 white LEDs
24VDC RCD-24-xxx 4k7
1st LED Last LED
GND Manual 1K Pot. Dimming Control
1st LED Last LED
MULTIPLE LED DRIVER (up to 20 LEDS)
+Vin GND Analogue Dim PWM Dim/ On/Off 2x NPN 0.5~1.0 Ohm RCD-24-0.70
LED DIMMER with high frequency PWM control
1st LED Last LED
+Vin GND 10kHz TTL PWM C R Ana. Dimming RCD-24-xxx
1st LED Last LED
Driving Two Strings of 350mA LEDs with one 700mA Driver using a current mirror
LED Temperature Monitoring
RGB Driver
RCD-24
Automatic LED Overtemperature Protection
24VDC 4k7 4V7 Zener GND 4k7 Analog Dimming PTC Thermistor
RCD-24-xxx
1st LED Last LED
Thermally connected
Typical Response Curve (PTC = 500 Ohm @ 70C)
100%
Output Current
0% 25
50
70 60 LED Temperature (C)
80
90
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DC/DC-Converter
Package Style and Pinning Pinned Version
RCD-24 Series
3rd angle projection
22.10 8.50 4.1 0.6 17.5
12.55
Pin Connections Pin # 1 Out +Vin Analogue Dimming PWM/ON/OFF GND -Vout +Vout RCD-24 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
7.62
1.00 o+0.15/0
2 3 4 5
5 4 3 Bottom View 2 6 1
6
XX.X 0.5 mm XX.XX 0.25 mm Pin Tolerance 0.1 mm
Leave 1 mm space arround case on PCB
2.54
Top View
2.54
Recommended Footprint Details
SMD Version
Solderball Pin after Reflow
3rd angle projection
RCD-24
6.6 1.8 21.00 17.8
5 4 3 Bottom View 2 6 1
1.0 2.54
3.180 1.90
3.380
1.9 11.42
1.90o SMT Pad
Pin Connections Pin # 1 2 3 Out +Vin
RCD-24 SMD 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
7.6
Analogue Dimming PWM/ON/OFF GND -Vout +Vout
2.54
Top View
2.54
4 5 6
XX.X 0.5 mm XX.XX 0.25 mm XX.XXX 0.01 mm
The reference codes for standard parts are: Due to the compact size of the Open Frame version, a product code label is used instead of the whole part number. The product code consists of RCD xxxx (where xxxx is the datecode) followed by an 8 digit reference code, e.g. RCD-24-0.30/SMD/OF = 80999199 RCD-24-0.35/SMD/OF = 80999186 RCD-24-0.50/SMD/OF = 80999200 RCD-24-0.60/SMD/OF = 80999201 RCD-24-0.70/SMD/OF = 80999202 Other custom or semi-custom parts may have different reference codes. I-57
RCD 1001 80999186
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= RCD-24-0.35/SMD/OF, manufactured in Week 1 of 2010.
REV:1/2010
INNOLINE
DC/DC-Converter
Package Style and Pinning Wired Versions
Wire Connections
RCD-24 Series
3rd angle projection
RCD-24/W Series Comments DC Supply Do not connect to -Vout LED Cathode Connection LED Anode Connection
17.5
4 1 Bottom View /W Version 5
Wire # 1 (Red) 4 (Black)
Function +Vin GND -Vout +Vout
7.6
6
5 (Brown) 6 (Yellow)
Wire length = 100mm + 10mm stripped & tinned = 110mm total Wire outside diameter = 1.6mm Wire core diameter = 0.75mm Wire is UL/CSA listed/ 22AWG / 300V Rated
17.5
4 5 Bottom View 2 /W/X1 Version 6 1
7.6
Wire Connections
RCD-24/W/X Series Function Ana Dimming PWM Dimming Ana + PWM Dimming Comments /X1 /X2 /X3
17.5
5 4 3 Bottom View /W/X2 Version 6 1
Wire # 2 (Green)
7.6
3 (Blue) 2 + 3 (Green + Blue)
Wire length = 100mm + 10mm stripped & tinned = 110mm total Wire outside diameter = 1.6mm Wire core diameter = 0.75mm
RCD-24
17.5
5 4 3 Bottom View 2 /W/X3 Version 6 1
Wire is UL/CSA listed/ 22AWG / 300V Rated
7.6
Wired Versions are packed in bags - 5pcs per bag.
I-58
REV: 1/2010
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