IXYS Corp. has introduced the LDS8710/11, LDS8720/24/26 LED drivers to eliminate the external Schottky diode normally used in the rectification loop.

The LDS8710 drives a string of 10 LEDs with factory-preset maximum LED current values of 20-, 25- and 30mA with 1% accuracy, and uses pulse-width modulation dimming to adjust LED brightness. They are designed for  LCD display backlight applications such as automotive displays, GPS, netbooks, laptop PCs, tablet computers and industrial and medical displays.

The LDS8711 uses a patent pending SmartOne Wire Interface to set maximum LED current in the range from 0.5mA to 32mA in 0.25mA steps and PWM dimming control and is able to drive a string of 10 WLEDs. They are available in LCD display backlight applications such as smart phones, portable multimedia devices, e-books, personal navigation systems, personal medical displays and digital photo frames.

LDS8720/24 and LDS8726 use PWM dimming to adjust the LED brightness and are able to drive 40 LEDs and 42 WLEDs at 25mA current each. Drivers provide full output power from a single-cell Li-ion battery or supply voltage in the range of 2.7V to 5.5V.

Both device families are suitable to drive WLEDs for lighting applications and available in a tiny 2mm x 3mm x 0.8mm 8-pin TDFN package.