ET6312B | ETEK Microelectronics

Constant Current LED Driver, ET6312B, ETEK Microelectronics

The ET6312B is a four-channel constant-current RGB LED driver with an I²C interface. The device is ideally powered from 3.3 V or 5 V supplies. The independent programmable constant-current sinks operate without external components. The device has three types of interconnected threads. Each channel can operate in any thread mode with an on-chip timing control unit. The LED blink rate, fade-in (256 steps), and fade-out (256 steps) are user-adjustable, resulting in unique color lighting patterns.

The ET6312B has ADDR and SYN pins, allowing four chips to be cascaded with a single I²C bus and one synchronous clock. In shutdown mode, the quiescent current is reduced to less than 1 µA.

Features

• Each nine programmable LED setting registers are shared by each three LED
• I2C control, one ADDR pin realize four chip address selection
• SYN pin can supply chips cascade synchronous clock
• No noise, non-pulsating LED current, Fast, smooth start-up