LED driver from Diodes Incorporated increases reliability of high brightness lamp systems

With an extended 6V to 60V operating input voltage range and a typical 1% output current tolerance in all topologies, the driver is capable of delivering the high current levels and tight inter-lamp luminance-matching required by high brightness LED systems. LED reliability and longevity is improved by active LED thermal management achieved via a dedicated external thermistor input, and by fault diagnosis outputs that report status of LED driver and load.

The ZXLD1370 LED driver controller, used with an external MOSFET, provides a single driver solution capable of supporting a very wide range of LED configurations and current requirements. It supports high accuracy dimming through DC dimming and PWM dimming options. With a dedicated PWM input, the driver offers a 1000:1 dynamic dimming range at 1 kHz. This allows for high accuracy control of colour mixing and excellent resolution at low brightness levels.

The device's 1MHz switching frequency capability with 100 kHz low frequency clamp also means a reduction in the size of the external inductor and simpler design of input EMI filters should they be required.