Integrated Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), Over-Temperature Protection (OTP), and cycle-by-cycle current limiting.
You can find the full technical documentation for the LZC8650C at the following locations: LZC8650 Detailed Datasheet (PDF) Mouser - DIO8650C (Equivalent/Related Series) Prism Electronics Product Page
Current sense pin; monitors MOSFET current via a precision resistor. System and power ground. lzc8650c ic datasheet pdf
Where $V_ref$ is the internal reference voltage defined in the datasheet.
Gate driver pin; connects to the gate of the primary MOSFET . Where $V_ref$ is the internal reference voltage defined
Without proper thermal design, the LZC8650C will enter thermal shutdown or fail prematurely. The datasheet provides:
| Parameter | Typical Value | Significance | |-----------|--------------|---------------| | Input Voltage | 4.5V – 40V | Determines battery or bus compatibility | | Output Current (max) | 1.5A (continuous), 2.5A (peak) | Defines LED load capability | | Switching Frequency | 500kHz ±15% | Impacts inductor and capacitor size | | Feedback Voltage | 0.1V or 0.2V | Low feedback reduces sense resistor loss | | DIM Pin Logic | 0.3V to 5V PWM | Allows microcontroller dimming | | Efficiency | Up to 95% | Reduces heat and extends battery life | | Thermal Shutdown | 150°C (typical) | Protects IC during overload | The datasheet provides: | Parameter | Typical Value
The LZC prefix suggests a Chinese or Taiwanese brand (e.g., LZ Electronics, Lison, or Silergy). Try searching for the manufacturer using the full part number. Look for a “Products” or “Technical Support” section.
