Optoelectronics
Diodes' multi-topology LED driver raises performance of high brightness lighting systems
Diodes Incorporated has announced a multi-topology LED driver designed to increase the performance of high brightness automotive, industrial and commercial lighting systems. Operating in buck, boost and buck-boost modes, the ZXLD1374 LED driver with integrated 60V power MOSFET switch is capable of producing a maximum LED current of 1.5A. The IC uses high-side current sensing and patent pending control loops to achieve high accuracy current control of LED strings.
An eWith dedicated DC dimming and PWM dimming pins, the ZXLD1374 provides a 1000:1 dynamic dimming range at 500Hz, ensuring highly accurate control of colour mixing and excellent resolution at low brightness levels. The IC's 1MHz switching frequency capability with 100kHz low frequency clamp also helps reduce the size of the external inductor and simpler design of any input EMI filters.