Pdf - Lzc8650c Ic Datasheet
LZC8650C IC — Overview and Datasheet Summary
The LZC8650C is an integrated circuit typically used as a power-management / LED-driver / display-controller family device (exact function depends on manufacturer labeling and application context). Below is a concise, general summary you can use if you need a brief descriptive text for documentation or search contexts. Note: for design work always consult the official manufacturer datasheet (PDF) for exact electrical characteristics, pinout, timing, thermal limits, and recommended PCB layout.
Temperature Compensation: Supports external NTC resistor connection for precise thermal adjustment. Pin Configuration (SOP-8) Description COMP Loop compensation for constant current regulation. FB Feedback pin; detects zero current to regulate output. CS lzc8650c ic datasheet pdf
The LZC8650C is often used in 45W to 110W LED drivers and features the following typical ratings (based on the similar DIO8650C and LZC8620 series): Package Type: SOP-8 (8-pin Surface Mount). Supply Voltage ( VINcap V sub cap I cap N end-sub ): Typically recommended between 9.5V and 27V. Operating Temperature: Industrial range from -40∘Cnegative 40 raised to the composed with power C +125∘Cpositive 125 raised to the composed with power C LZC8650C IC — Overview and Datasheet Summary The
Application: High-power isolated LED drivers, typically used in LED bulbs and tube lighting. Verify the maximum LED current and thermal dissipation
Design considerations
- Verify the maximum LED current and thermal dissipation limits from the official datasheet before selecting component values.
- Follow recommended PCB layout guidance for power and thermal pads to ensure stable operation.
- Use proper decoupling capacitors and recommended component values for inductors/resistors where applicable.
- Confirm PWM frequency and dimming interface compatibility with your microcontroller or dimming source.
Input Voltage Range: Wide universal AC input, typically 85V to 300V AC. Package Type: Available in 8-pin SOIC (SOP-8) packages.
The LZC8650C operates in Quasi-Resonance Mode (QRM), a control method that significantly reduces switching losses in the external power MOSFET, thereby enhancing system efficiency. Its primary side regulation (PSR) technology allows for precise control of the LED current based solely on information from the primary side of the transformer.
Unlike a simple linear regulator, the LZC8650C utilizes a high-frequency switching architecture. Its primary objective is to drive LED strings with a constant current regardless of input voltage fluctuations or changes in the LED string's forward voltage due to temperature. This ensures consistent luminosity and extends the lifespan of the LED emitters.