RT8489 Datasheet (Richtek) - High Voltage 4-CH LED Driver Controller

RT8489, High Voltage 4-CH LED Driver Controller

The RT8489 is a 4-CH LED driver controller that delivers well matched LED current to each channel of LED string.

With external current sources, the number of LEDs per string is only limited by the current source and the VIN/ VOUT conditions.

The current mode PWM Boost type controller operates at an

RT8489 Features

* include adjustable output over voltage protection, PWM switch current limit and thermal shutdown. Features z Wide Operation Voltage Range : 7V to 28V z Programmable Channel Current z 3% Current Matching Accuracy between Channels z Adjustable Switching Frequency z Easy Analog and Digital Dimming Cont