: Detects and protects against output short-to-ground conditions.
Connects to the gate of the external power MOSFET. Applications
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
) to swing down to its minimum value (the valley) before initiating the next conduction cycle. This drastically minimizes capacitive turn-on switching losses and lowers electromagnetic interference (EMI) signatures. 3. Four-Stage Temperature Foldback (OTP Pin)
To help tailor this design information to your specific project, tell me: Value / Range Flyback / Buck-Boost Control Mode
: The谷底 (valley) detection and frequency modulation techniques help maintain low electromagnetic interference. Typical Application Circuit Pins
Achieves a power factor (PF) greater than 0.95, easily meeting strict global regulatory standards for harmonic emissions (such as EN61000-3-2). Four-Stage Temperature Foldback (OTP Pin) To help tailor
Zero Current Detection pin. Senses the auxiliary winding voltage to trigger the next MOSFET turn-on cycle. GND Ground reference for all internal control circuitry. 7 GATE
Loop compensation pin for constant current and voltage control. Connects an external RC network to ground to stabilize the OTA loop.
: Ensures uniform LED brightness by keeping output current variance within strict tolerances (typically < ±3%).
Multiplier input pin. Receives a rectified AC line voltage signal to shape the primary peak current for PFC. CS