SiLM42280
DESCRIPTION
Si LM42280/81/82/83 family devices provide independent triple linear current controller for LED driving (standalone driver or LED cluster). Diagnostic features are provided to meet automotive requirements, together with a munication interface “RUN” to link ICs to generate more than three channels, supporting individual current configuration and independent digital PWM dimming per channel (e.g. for RGB).
Two external configurable operation modes are supported. In the Failure Feedback Mode (FFM), channels are still operating in case of errors with error signalization. And in Single Lamp Mode, all linked Si LM4228x´s channels will be turned off in case of errors.
An intelligent power management system is provided using an external shunt resistor to share power distribution between IC package and external heat sink. Hotspot generation can be avoided by flexible heat spreading on the printed board. Internal derating for reference voltage and over temperature shutdown for extreme...
