RT8572

RT8572 High Voltage 8-CH LED Driver General Description The RT8572 is an 8-CH LED driver capable of delivering 60mA for each channel. The RT8572 is a current mode boost converter with an adjustable switching frequency via the RT pin from 100kHz to 1MHz and a wide VIN range from 9V to 28V. The PWM output voltage loop selects and regulates the LED pin with the highest voltage string to 0.6V, hence allowing voltage mismatches between LED strings. The RT8572 automatically detects and disconnects any unconnected and/or broken strings during operation from PWM loop to prevent VOUT from over voltage. The 1.5% matched LED currents on all channels are simply programmed with a resistor. A very high contrast ratio true digital PWM dimming can be achieved by driving the PWM pin with a PWM signal. When an abnormal situation (open/short/thermal) occurs, a status signal will be sent to the system to shut down the IC. The RT8572 is available in an SOP-24 package. Ordering Information RT8572 Package Type S : SOP-24 Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. ` Suitable for use in SnPb or Pb-free soldering processes. Marking Information RT8572 GSYMDNN RT8572GS : Product Number YMDNN : Date Code Features z Wide Input Supply Voltage Range : 9V to 28V z Adjustable Boost Controller Switching Frequency from 100kHz to 1MHz z Programmable Channel Current z Channe...