LED driver family offers multiple dimming options

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XP Power has announced the availability of the LDU series of 300 - 1000mA pcb mount LED drivers. The devices measure 20.32 x 10.16 x 6.88mm for the LDU08 300 mA model and, according to XP, have a typical efficiency of 95%.

Models within the series offer constant current outputs of 300, 350, 500, 600, 700 or 1000mA. The non-isolated step down drivers can accommodate a range of input voltage from 7 - 30VDC. Dimming options include two analogue methods (voltage or resistance) or a pulse width modulation (PWM) input signal. The PWM approach has a maximum operating frequency of 1KHz, with a minimum 200ns on/off time. When using an analogue dimming method, the output current range can be adjusted from 25 to 100% of nominal current. Offering a MTBF in excess of 5million hours, to MIL-HDBK-217F reliability standard at 25 °C. The LDU series has been designed to suit a range of energy efficient LED lighting designs such as those used for advertising displays, traffic signs, automotive lighting and consumer appliances. The LDU series is available from stock from Farnell or direct from XP Power.