FL7733MX

The FL7733MX is a primary-side regulated (PSR) LED lighting controller IC designed for offline LED lighting applications. It features high power factor, low total harmonic distortion, and primary-side feedback, simplifying design and reducing component count.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VDD: Power Supply for IC
• VIP: Primary-Side Control Voltage Input
• VCC: Supply Voltage for Internal Control Circuitry
• COMP: Compensation Node for Feedback Loop
• VOUT: Output Voltage for LED Connection
• FB: Feedback Pin for Primary-Side Regulation
• GND: Ground Connection
• SD: Shutdown Pin
• EN: Enable Pin
• CSP: Primary-Side Current Sense Input
• F: Frequency Setting Pin

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the FL7733MX IC for a visual representation.

Key Features

• Primary-Side Regulation: Simplifies design and reduces external components.
• High Power Factor: Ensures efficient power delivery to LED loads.
• Low Total Harmonic Distortion: Minimizes distortion and interference in lighting systems.
• Primary-Side Feedback: Eliminates the need for opto-couplers and secondary-side feedback circuitry.
• Integrated Protections: Includes features like over-temperature protection and over-voltage protection for reliable operation.
• Compact Package: Available in a compact form factor for space-constrained designs.

Note: For detailed technical specifications, please refer to the FL7733MX datasheet.

Application

• LED Lighting: Ideal for offline LED lighting applications in residential, commercial, and industrial settings.
• Bulb Replacement: Suitable for retrofit LED bulb designs requiring high efficiency and power factor correction.
• Architectural Lighting: Used in architectural lighting fixtures for energy-efficient and high-quality illumination.

Functionality

The FL7733MX is a primary-side regulated LED lighting controller that provides high power factor and low distortion for efficient LED lighting systems. Its primary-side feedback simplifies design and enhances performance in various lighting applications.

Usage Guide

• Power Supply: Connect VDD (Pin 1) to the power supply voltage.
• LED Connection: Connect the VOUT pin (Pin 5) to the LED load.
• Feedback Loop: Use the FB pin (Pin 6) for primary-side feedback regulation.

Frequently Asked Questions

Q: What is the advantage of primary-side regulation in the FL7733MX?
A: Primary-side regulation simplifies design complexity and reduces the number of external components required for LED lighting applications.

Q: Does the FL7733MX include over-voltage protection?
A: Yes, the FL7733MX features over-voltage protection to safeguard the LED lighting system from voltage spikes and faults.