The LP8860-Q1 has a unique features for protecting against overheating:
- Die temperature based Thermal de-rating function. Average LED current is automatically lowered when die temperature increases above a predefined (90°C, 100°C, or 110°C) level. Decreasing LED current reduces thermal loading on the device and prevents overheating.
- An external NTC sensor-based protection, where a sensor can be placed close to LEDs to protect them from overheating. The sensor is connected to the TSENSE pin of the device. Two methods are available:
- Current de-rating, where the LED current is lowered proportionally to the temperature measured with the external NTC sensor. This method is available only if LED max current is set with RISET resistor.
- Brightness limitation above a predefined temperature