The non-isolated step-down drivers can accommodate a very wide range of input voltage from 7 – 30 VDC. Dimming options include two analog methods (voltage or resistance) or a pulse width modulation (PWM) input signal. The PWM approach has a maximum operating frequency of 1 kHz, with a minimum 200 ns on/off time. When using an analog dimming method the output current range can be adjusted from 25% to 100% of nominal current.
Offering a MTBF in excess of 5 million hours, to MIL-HDBK-217F reliability standard at 25 degrees C. The LDU series suit a broad range of energy efficient LED lighting designs such as those used for advertising displays, traffic signs, automotive lighting and consumer appliances.
A remote on/off control input provides the designer the ability to control the output or sequence the start-up. Short and open circuit protection is also provided.
The LDU series is available from stock from Farnell or direct from XP Power. The devices have a 3 year warranty.