If you'd like, I can help you for a specific output wattage or troubleshoot a circuit that isn't starting up.
rated at 130°C) to withstand rugged operational conditions.
Monitors the CS pin voltage continuously. If the voltage exceeds the 1.1V threshold, the gate drive instantly shuts off for that switching cycle.
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.
The LZC8650C operates primarily in Boundary Conduction Mode (BCM), which significantly reduces switching losses and eliminates diode reverse recovery losses. Value / Range Flyback / Buck-Boost Control Mode Primary-Side Regulation (PSR) Power Factor (PF) Total Harmonic Distortion (THD) < 10% (typically) VCC Operating Range 10V to 25V Start-up Current Package Type SOP-8 / DIP-8 Pin Configuration and Functions lzc8650c ic datasheet pdf
Current Sense pin. Connects to the source of the primary MOSFET via a sense resistor to provide cycle-by-cycle current limiting. NC / OVP
Typically achieves a power factor >0.95 and low Total Harmonic Distortion (THD < 10%) at standard AC voltages. Quasi-Resonant Mode (QRM):
The LZC8650C is engineered to eliminate the need for secondary feedback components like opto-couplers, which significantly lowers system cost and complexity. „Mouser Electronics“ Lietuva Primary-Side Regulation (PSR):
The LZC8650C is a high-performance, highly integrated LED lighting controller designed for buck-boost and flyback topologies. This comprehensive technical guide serves as an extended reference for engineer and hobbyists seeking detailed specification analysis, circuit configurations, and deployment strategies typically found in the official . 1. Overview and Key Features If you'd like, I can help you for
Loop compensation pin for constant current and voltage control. Connects an external RC network to ground to stabilize the OTA loop.
: Integrated valley detection and line compensation ensure precise output current across universal AC input ranges . Pinout Description (SOP8) Description CS
Multiplier AC line sensing input. Connects to the rectified bulk voltage through a resistor divider to shape the input current for high PF. CS
Iout=12×Vcs_thRcs×ToffTsw×Ncap I sub o u t end-sub equals one-half cross the fraction with numerator cap V sub c s _ t h end-sub and denominator cap R sub c s end-sub end-fraction cross the fraction with numerator cap T sub o f f end-sub and denominator cap T sub s w end-sub end-fraction cross cap N (Where Vcs_thcap V sub c s _ t h end-sub is the internal current sense threshold, Rcscap R sub c s end-sub is the sense resistor value, and represents the transformer turns ratio.) Quasi-Resonant (QR) Switching If the voltage exceeds the 1
: Voltage on the CS pin is monitored continuously. If the current sense threshold passes 1.1V , the DRV output immediately shuts off to protect the switching transistor from saturation currents.
If you are currently designing a power supply with this component, let me know:
Whether you're a seasoned engineer or a newcomer to the world of electronics, the LZC8650C is definitely worth getting to know. Who knows what amazing products and applications will be enabled by this little chip?
What is your target and LED load voltage ?