FAN7710VN

Overview

The FAN7710VN is a CFL ballast control IC from onsemi, integrating a frequency programmable oscillator, filament preheat control, dead-time control, adaptive ZVS controller, and high/low-side MOSFET drivers. It includes integrated power MOSFETs with a breakdown voltage exceeding 440V and a typical on-resistance of 4.6Ω at VGS=10V. The device operates within a temperature range of -40°C to 125°C in an 8-pin DIP package. Key electrical parameters include a start current of approximately 150μA, a working current of about 2.6mA, a VDD turn-on threshold of 13.4V, and an undervoltage lockout threshold of 11.6V.

Feature Summary

• Integrates high-voltage power MOSFETs with built-in freewheeling diodes for compact half-bridge designs
• Provides active zero-voltage switching (ZVS) control to enhance efficiency and reduce electromagnetic interference
• Includes dedicated filament preheat circuitry to extend lamp life by ensuring proper cathode emission
• Features comprehensive protection mechanisms including over-temperature sensing and open-lamp detection

Applications

• Compact Fluorescent Lamp (CFL) electronic ballasts
• Energy-saving fluorescent lighting systems
• AC-DC power conversion circuits for lighting applications

Procurement Notes

Verify the manufacturer designation carefully, as the FAN7710 series is currently manufactured by onsemi following industry acquisitions. Confirm that the specific suffix 'VN' corresponds to the required 8-pin DIP packaging and lead-free compliance status. Ensure compatibility with existing PCB footprints and thermal management requirements for the target lighting application before finalizing procurement.

Selection Notes

Select this component for designs requiring an integrated solution for CFL ballasts to minimize external component count. The internal power MOSFETs simplify the bill of materials compared to discrete half-bridge implementations. Consider the fixed integration of ZVS and preheat features when evaluating design complexity versus performance needs. Verify that the operating voltage range aligns with the local AC mains specifications for the intended market.

Part Context

The FAN7710VN belongs to the FAN7710 family of intelligent power switches designed specifically for lighting applications. This series consolidates control logic and power stages into a single monolithic structure. The device represents a specialized class of integrated circuits aimed at optimizing the size and cost of electronic ballasts while maintaining reliability standards for consumer lighting products.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official cross-reference tools or manufacturer engineering support for validated alternatives.