Major distributors like Mouser, Digi-Key, LCSC, or Newark often host datasheets directly from the manufacturer. Use their search bar with the exact part number. These PDFs are verified and virus-free.
When you finally open the LZC8650C IC datasheet PDF, pay close attention to these parameters: lzc8650c ic datasheet pdf
| 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 | Major distributors like Mouser, Digi-Key, LCSC, or Newark
Note: Always check the “Note” sections in the datasheet’s tables—they often contain critical usage conditions (e.g., “output current derating required above 50°C ambient”). The ESOP-8 package has a thermal pad underneath
The ESOP-8 package has a thermal pad underneath. If this pad is not soldered to a large copper area (with thermal vias to an inner ground plane), the IC will overheat at currents above 800mA. The datasheet specifies the minimum pad size and via pattern.
Many engineers assume a 20kHz PWM signal is fine for dimming. However, the LZC8650C’s DIM pin is optimized for 100Hz to 2kHz. Higher frequencies cause incomplete turn-on/off cycles and distorted brightness. The datasheet explicitly states the acceptable range.
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