FAN7711ZN

Overview

The FAN7711ZN is a specialized electronic ballast control IC designed for high-performance fluorescent lamp applications. It integrates an oscillator, adaptive zero-voltage switching (ZVS) controller, and gate drivers for half-bridge MOSFETs. The device supports bootstrap operation with floating channel voltages up to 600 V. Key electrical parameters include a low start-up current of 120 μA and operating current of 3.2 mA. The UVLO thresholds are set at 11.6 V for turn-off and 13.4 V for turn-on, providing 1.8 V hysteresis. An internal 15.2 V Zener clamp protects the VDD pin. The operational temperature range spans from -25°C to 125°C.

Feature Summary

• Integrates adaptive zero-voltage switching (ZVS) control circuitry to optimize switching efficiency.
• Provides built-in open lamp detection functionality without requiring external components.
• Features low power consumption with minimal start-up and operating currents.
• Includes thermal shutdown protection that activates when junction temperature exceeds 160°C.

Applications

• Electronic ballasts for fluorescent lighting systems
• High-performance fluorescent lamp drivers
• Resonant inverter circuits for lighting control

Procurement Notes

Verify the specific suffix 'ZN' against official onsemi/Fairchild documentation, as standard listings typically reference N, SN, M, or SM variants. Confirm package type and RoHS compliance status directly from the manufacturer's datasheet or authorized distributor specifications before procurement.

Selection Notes

Select this component for designs requiring integrated ZVS control and low standby power. Ensure external RT and CPH components are chosen to set the desired oscillation frequency and预热 time according to the application requirements. Verify that the supply voltage remains within the specified UVLO limits during startup.

Part Context

The FAN7711 series represents a family of ballast controllers originally developed by Fairchild Semiconductor, now managed by onsemi. These devices are engineered to simplify the design of electronic ballasts by integrating critical control functions into a single IC, reducing component count and board space.

Replacement Considerations

Publicly confirmed direct substitutes include the HT8822N. Verify pin compatibility and electrical specifications with the target replacement datasheet to ensure functional equivalence in the specific application circuit.