Typically achieves a power factor >0.95 and low Total Harmonic Distortion (THD < 10%) at standard AC voltages. Quasi-Resonant Mode (QRM):
: Drives the external power MOSFET (e.g., an 8N70 MOSFET).
typical decay rate), keeping the luminaire illuminated safely at a dimmer setting rather than turning off completely. Typical LZC8650C Application Schematic Guide lzc8650c ic datasheet pdf
Quasi-Resonant (QR) mode to reduce MOSFET switching losses. Start-up Current: Extremely low (15µA typical).
Acts on the CS pin to prevent peak current damage. 📂 Datasheet & Technical Resources Typically achieves a power factor >0
To ensure system reliability, the IC includes several safety features:
These inputs have high impedance and are vulnerable to stray electromagnetic pickup. Keep traces running from the sense resistors to Pins 1 and 4 as brief as possible, and route them far away from the noisy drain node of the MOSFET. Start-up Current: Extremely low (15µA typical)
Over-Voltage Protection (OVP) and Under-Voltage Lockout (UVLO). Output short-circuit and open-circuit protection.
Reliability is paramount in power electronics, and the LZC8650C features a comprehensive suite of protections to ensure safe operation:
Supports current compensation based on temperature using an NTC resistor.
The “C” often indicates a specific die version or temperature range (e.g., commercial 0°C to 85°C vs. industrial -40°C to 85°C).