Optoelectronics
70 Watt Buck Driver powers long LED Strings and Multi-Chip Arrays
LED lighting is booming! Especially for LED strings and multi-chip arrays, the advance is enormous. The required input voltage for buck-drivers increases with the number of LEDs which have to be supplied with constant current. Currently available models had a limit of approximately 40V.
Not The RCD-48 drivers are dimmable down to zero with external digital (PWM) or analogue control. The PWM control input can be directly connected to a microcontroller. Efficiency is rated at 96%, with an operating temperature range -40°C and +85°C. The modules are available with pins for PCB mounting or with flying leads for non pcb applications. Whilst the powerful 1200mA version features a metal case, the smaller models are designed in plastic cases. All types are certified to EN/UL-60950-1. The MTBF is specified at MIL-HDBK217F with 1.7 million hours. The warranty is 5 years.