Tiny Triple-Output LED Driver with I2C Interface
ON Semiconductor introduced the NCP5623 – a high efficiency triple output LED driver with I2C interface and built-in gradual dimming. The device is specifically designed to drive tricolor RGB (red, green, blue) LEDs for fun lighting or enhanced LCD backlighting in portable applications such as cell phones and MP3 players. Offered in the compact LLGA-12 package, the device is said to be the smallest RGB LED charge pump driver housed in a non-bump plastic package. The driver performs autonomous operations upon the command of the processor via its I2C interface. Its three independently controlled current outputs - with +/- 0.5 percent typical matching tolerance and 32 current levels - allow the display of more than 32,000 colors with a tricolor RGB LED. The device features an integrated gradual dimming feature, which progressively increases or decreases output current to produce a theatrical fade-in/fade-out effect. The use of a logarithmic current profile ensures the light and color changes appear smooth and linear to human eyes. The NCP5623 is housed in the lead-free (Pb-free) 2.0 mm x 2.0 mm x 0.55 mm LLGA-12 package and is budgetary priced at $0.55 USD per unit for 3,000 unit quantities.