Kbc1126nu Datasheet Hot [LATEST]

Second, the datasheet’s electrical characteristics implicitly explain why the KBC1126NU runs “hot” under normal conditions. The device operates at 3.3V but internally steps down voltage for its core. Crucially, its GPIO pins driving external devices (e.g., backlight enable, wireless radio kill switches) have finite source/sink capabilities. When a design flaw—or a physical short—causes a pin to sink excessive current, the chip’s internal resistance generates localized power dissipation ((P = I^2R)). The datasheet’s thermal resistance junction-to-ambient ((\Theta_JA)) value (often 40–60°C/W for the 128-pin QFP package) means that every 0.5W of internal power can raise the die temperature 30°C above ambient. Therefore, a seemingly modest 100mA overcurrent on two or three outputs can push the chip from “warm” to “hot” without triggering an overcurrent protection (OCP) event.

: Uses the LPC (Low Pin Count) interface to communicate with the laptop's southbridge or chipset. Why It's "Hot": Features & Capabilities The KBC1126-NU Go to product viewer dialog for this item. kbc1126nu datasheet hot