LED driver from Diodes Incorporated increases reliability of high brightness lamp systems
Diodes Incorporated has introduced a multi-topology LED driver IC designed to increase the reliability of high brightness lamps in automotive, industrial and commercial lighting systems. The ZXLD1370 LED driver controller operates in buck, boost and buck-boost modes. It combines patent pending control loops and high-side current sensing to ensure accurate current control of LED strings.With
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.