The LTC3219 9-output universal LED (ULED) driver is a small and powerful LED driver that can be programmed via the I2C bus interface to individually grade, blink or turn on nine individual LEDs using internal logic and circuitry to drive nine 6-bit DAC-controlled LED current sources.
Design Note 422 introduces the LTC3219, a single IC capable of driving nine individual LEDs with features like gradation (fading) and blinking. The device uses internal logic to control up to nine 6-bit DAC-controlled LED current sources, minimizing external hardware requirements.
Any feature on any channel can be configured to activate via an external enable pin or I2C interface with a maximum output of 28mA.
The device operates from a 2.9V to 5.5V input.
The LTC3219 comes in a 3mm x 3mm package and only requires five external components.