A new series of integrated, high-efficiency and compact power LED drivers from Recom International will significantly simplify the implementation of LED-based lighting applications.
The Recom International RCD-24 series of step-down constant current sources has been specifically designed to provide a compact, fully featured and highly efficient solution for driving high-power white LEDs.
Offering current outputs of 300mA, 350mA, 500mA, 600mA and 700mA, the RCD-24 series allows designers to implement lighting designs using LEDs from a variety of manufacturers without the need for additional external components. Furthermore, a compact form factor means that the drivers can be incorporated directly into the LED lamp fixtures. Alternatively, designers can mount the modules separately so that they can be installed or exchanged as easily as any other light fitting.
Despite their compact size, Recom’s RCD-24 drivers integrate a high level of functionality, including both analogue and PWM/digital dimming control. The dimming controls are fully independent and can be combined to offer maximum design flexibility. There is also a remote on/off function for energy saving applications.
The new drivers are based on a non-isolated, buck regulator topology and feature a very wide DC input voltage range of 4.5V to 36V to accommodate the widest possible range of design requirements. With efficiency levels up to 97%, the internal power losses are so low that RCD-24 devices can be used in ambient temperatures of up to +85°C at full load. The high-efficiency buck regulator topology is also behind the compact construction, with each driver measuring just 22.1mm x 12.6mm x 8.5mm.
Each module in the new series can be supplied with either six pins or with four 110mm flying pre-tinned leads, ideal for pcb-less applications. Operating temperature range (without derating) is from -40°C to either +71°C or +85°C depending on the model chosen. EMC compatibility with EN 55022 Class B is easily achieved through the addition of just two further components, with another four ceramic capacitors providing compatibility with EN 61000-4-2, -3, -4 and -6.
Reliability is up to 516k hours, which is longer than the LED the RCD series drives.
Features
UFully integrated power LED driver
UConstant current, single output
UWide input voltage range: 4.5V to 36V
UOutput current options:
-0mA to 300mA
-0mA to 350mA
-0mA to 500mA
-0mA to 600mA
-0mA to 700mA
UMaximum efficiency: 97%
UPWM/digital dimming: 20Hz to 200Hz
UAnalogue voltage dimming
URemote on/off function
UShort circuit protection
UDimensions: 22.1mm x 12.6mm x 8.5mm
UAvailable with pins or leads
UMTBF up to 516,000 hours
Applications
UDC supply LED-based lighting applications including:
-Traffic lights
-Railway signalling
-Industrial, commercial and architectural lighting
-Commercial vehicles
-Aircraft interior illumination
-Lighting for harsh and hazardous environments
-Marine
-Security
Recom RCD-24 Datasheet and Selection Guide Shortform available! Please complete the reply slip or visit the weblink below.
