FL7701MX

Overview

The FL7701MX is a smart LED lamp driver IC with integrated power factor correction (PFC) functionality, manufactured by onsemi. It features a digital PFC implementation that automatically detects input voltage conditions to enable high power factor without additional circuitry. The device includes a built-in high-voltage self-biasing power supply circuit, eliminating the need for large electrolytic capacitors. Key electrical parameters include a typical operating current of 0.85 mA, an internal reference accuracy of ±3%, and a programmable oscillation frequency range. It supports analog dimming and offers protection against over-temperature, short circuits, and open-loop detection.

Feature Summary

• Digital active PFC function automatically enabled by AC input detection
• Built-in high-voltage self-biasing power supply circuit
• Auto-restart mode for over-current protection (AOCP)
• Integrated thermal shutdown protection

Applications

• LED decorative lighting systems
• Low-power LED illumination fixtures
• LED ballast designs requiring high power factor

Procurement Notes

Verify the manufacturer marking matches onsemi specifications. Confirm the package type corresponds to SOP-16 or equivalent as defined in the official datasheet. Check RoHS compliance status through the manufacturer's certification documents. Ensure the component date code aligns with current production standards. Validate part authenticity using authorized distributor channels.

Selection Notes

Select this component for applications requiring simple LED driving with inherent power factor correction. It is suitable for designs aiming to eliminate bulk electrolytic capacitors for improved reliability. Consider its low operating current for energy-efficient standby modes. Evaluate its analog dimming capability if smooth brightness control is required. Verify compatibility with the target LED string voltage and current requirements.

Part Context

The FL7701MX belongs to the FL7701 series of smart LED drivers from onsemi. This series is designed for cost-effective and compact LED lighting solutions. It integrates control logic and power stage drivers into a single chip. The family focuses on simplifying design complexity for low-wattage LED lamps.

Replacement Considerations

FL7701MX is functionally equivalent to FL7701. Cross-reference with FL7701MX from Fairchild Semiconductor, which shares identical specifications due to corporate acquisition history. Verify pinout compatibility before substitution.