IXYS Corp. Introduced New 6-channel WLED Driver

IXYS Corp. has introduced samples and evaluation boards of its inductor-based, 6-channel white LED driver, the LDS8763 which can be used for backlight LED lighting of medium-size LCD displays and large-area LED lighting panels for indoor and outdoor LED lighting fixtures.

The LDS8763, an integrated DC/DC boost converter with an internal MOSFET switch as a synchronous rectifier for highest efficiency, can drive 72 WLEDs in six strings with up to 12 LEDs per string.

It is available with factory-programmed LED current at 20mA, 25mA, or 30mA per string and 1.5% channel-to-channel current matching. The MOSFET operates at 0.7MHz switching frequency and wide input voltage range of 4.5V to 28V for power conversion circuitry. A small external inductor of 10-33µH is required. The device features under-voltage, over-voltage, over-current, and over-temperature protections.

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