is a highly integrated, high-performance LED driver controller designed for offline LED lighting applications . It is engineered by Lozen Technology (and closely related to the DIO8650C) to offer high power factor (PFC), excellent current accuracy, and simplified design for LED driving systems. By utilizing primary-side feedback, the IC eliminates the need for optocouplers and secondary feedback components, reducing costs and increasing system reliability.
Built-in hysteresis Over-Temperature Protection (OTP) and an output current foldback feature that reduces current as temperature rises.
Operates in QRM to minimize switching losses in the primary MOSFET, boosting overall efficiency. Temperature Foldback:
Current sensing pin; monitors voltage across a high-precision resistor. System and power ground. DRV Totem-pole output to drive the external power MOSFET. VDD Main power supply for the IC. OTP Sets the temperature foldback point for thermal protection. OVP Input line voltage over-voltage protection. Protection Mechanisms lzc8650c ic datasheet pdf
In a typical application circuit, the LZC8650C acts as the central controller for a high-PF offline LED bulb or downlight transformer.
In a world where technology advances at a breakneck pace, it's easy to overlook the tiny components that make it all possible. But today, we're going to shine the spotlight on a remarkable little chip that's been making waves in the industry: the LZC8650C.
The LZC8650C operates seamlessly under variable AC line voltages (typically from 85Vac to 300Vac), making it ideal for worldwide electrical grid variations. System and power ground
If you can provide the (SOT23-6 or SOIC-8) and manufacturer , I can help you find a link to the specific datasheet pdf. I can also help you with the schematic design or component selection for your LED driver.
The LZC8650C is typically housed in a standard, space-saving format. Below is the functional breakdown of the 8-pin layout essential for schematic capturing and PCB design: Pin Number Functional Description 1 INV
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). an external Power MOSFET
The is a high-performance, single-stage LED driver integrated circuit (IC) primarily used in offline AC/DC flyback power converters. It is designed for high-efficiency LED lighting applications, featuring active power factor correction (PFC) and primary-side regulation (PSR), which eliminates the need for secondary feedback components like optocouplers. 🛠️ Key Specifications & Ratings
A: In many cases, the pinout and functionality are similar. However, the feedback voltage (Vref) may differ (e.g., 0.1V vs. 0.2V), which changes Rsense values. Always consult the LZC8650C IC datasheet PDF for exact values.
Line overvoltage protection input. Directly senses input AC lines to shield the system from catastrophic grid voltage surges. Absolute Maximum Ratings & Operating Limits
A typical circuit includes the LZC8650C controller, an external Power MOSFET, a flyback transformer, and input rectification components. 6. Protection Features