FAN7711 ,Electronic Ballast Control ICFeatures Description Floating Channel for Bootstrap Operation to +600V The FAN7711, developed wit ..
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FAN7711
Electronic Ballast Control IC
FAN7711 — Ballast Control Integrated Circuit May 2007 FAN7711 Ballast Control Integrated Circuit Features Description Floating Channel for Bootstrap Operation to +600V The FAN7711, developed with Fairchild’s unique high- voltage process, is a ballast control integrated circuit (IC) Low Start-up and Operating Current: 120μA, 3.2mA for a fluorescent lamp. FAN7711 incorporates a preheating Under-Voltage Lockout with 1.8V of Hysteresis / ignition function, controlled by an user-selected external Adjustable Run Frequency and Preheat Time capacitor, to increase lamp life. The FAN7711 detects switch operation from after ignition mode through an Internal Active ZVS Control internal active Zero-Voltage Switching (ZVS) control Internal Protection Function (Latch Mode) circuit. This control scheme enables the FAN7711 to detect an open-lamp condition, without the expense of Internal Clamping Zener Diode external circuitry, and prevents stress on MOSFETs. The High Accuracy Oscillator high-side driver built into the FAN7711 has a common- Soft-Start Functionality mode noise cancellation circuit that provides robust operation against high-dv/dt noise intrusion. 8-SOP 8-DIP Applications Electronic Ballast Ordering Information Part Number Package Pb-Free Operating Temperature Range Packing Method FAN7711N 8-DIP Tube FAN7711M Yes -25°C ~ 125°C Tube 8-SOP FAN7711MX Tape & Reel Typical Application D5 R3 D6 R1 U1 D1 D2 V DD V B 1 8 Main R4 RT HO C1 Supply 2 7 FAN7711 Q1 C4 D7 C5 L1 C6 V S CPH 3 6 R5 GND LO 4 5 D3 D4 C2 R2 C3 Lamp Q2 C7 FAN7711 Rev. 1.00 Figure 1. Typical Application Circuit for Compact Fluorescent Lamp © 2007 FAN7711 Rev. 1.0.3
