Lzc8650c Ic Datasheet Pdf [2021] -
LZC8650C
The is a high-performance, single-stage flyback and Power Factor Correction (PFC) controller integrated circuit (IC) primarily designed for LED lighting applications. This IC is often utilized in high-power LED drivers (ranging from 45W to 110W) due to its efficiency and primary-side regulation (PSR) capabilities, which eliminate the need for secondary feedback circuits. Key Features and Benefits
- Over-Voltage Protection (OVP): If an LED string becomes open-circuited, the voltage at the output can rise dangerously high. The LZC8650C detects this via voltage sensing resistors and shuts down the GATE output, preventing catastrophic failure of the MOSFET or capacitor bank.
- Short-Circuit Protection (SCP): If the LED string shorts, the driver attempts to dump maximum current. The IC detects the abnormal CS feedback and locks the system down to prevent thermal runaway.
- Thermal Shutdown: The IC includes an internal thermal sensor. If the junction temperature exceeds the defined limit (typically around 150°C), the IC shuts down. This is critical for enclosed fixtures where heat dissipation is limited.
- Cycle-by-Cycle Current Limiting: This protects the external MOSFET during switching transients, ensuring that the peak current never exceeds the safe operating area of the power components.
Package Types:
Commonly available in SOP-8 or SOT23-6 formats. lzc8650c ic datasheet pdf
Safety Isolation
: Provides high power isolation to protect systems from electrical hazards . Core Features LZC8650C The is a high-performance, single-stage flyback and
Supply Voltage (VDD)
According to preliminary datasheet data from TaoIC , the LZC8650C operates within the following parameters: Typical Value Range/Limit 18.1V – 21.5V (Turn-on) VDD Over-Voltage Protection Startup Current Low standby power Operating Current MOSFET Drive Voltage Internal clamp Junction Temperature -40°C to 125°C (Recommended) Pinout Configuration (8-Pin Package) Over-Voltage Protection (OVP): If an LED string becomes