Lzc8650c Ic Datasheet Pdf [upd] Jun 2026

The (often appearing in documentation as the LZC8650 ) is a Primary Side Regulation (PSR) and Power Factor Correction (PFC) LED Driver Controller . It is designed for isolated flyback or non-isolated Buck-Boost topologies, providing high current accuracy without the need for secondary feedback components like optocouplers. Key Technical Specifications Feature Control Mode Quasi-Resonance (QR) mode with Flyback or Buck-Boost PFC Type Single-stage Power Factor Correction (PFC) Current Control

An internal thermal sensor tracks the silicon die temperature. If it crosses approximately 150∘C150 raised to the composed with power C

Output short-to-ground protection and cycle-by-cycle current limiting on the CS pin. lzc8650c ic datasheet pdf

Supports current compensation based on temperature using an external NTC resistor to protect the LEDs from overheating. Technical Specifications Based on typical datasheet parameters for the 8650 series:

A: The “C” revision typically has improved thermal performance or higher switching frequency. Only the latest datasheet revision will document these differences. The (often appearing in documentation as the LZC8650

High-power isolated LED drivers, typically used in LED bulbs and tube lighting.

The datasheet will also show optional circuits for: If it crosses approximately 150∘C150 raised to the

): 400 ns — Suppresses turn-on current spikes without needing external RC filtering. Advanced Functional Mechanisms

Without proper thermal design, the LZC8650C will enter thermal shutdown or fail prematurely. The datasheet provides:

Built-in hysteresis Over-Temperature Protection (OTP) and an output current foldback feature that reduces current as temperature rises.

Acts on the CS pin to prevent peak current damage. 📂 Datasheet & Technical Resources