FAN7710 Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Ballast Control IC for Compact Fluorescent Lamps

June 2007
FAN7710
Ballast Control IC for Compact Fluorescent Lamps
Features
„ Integrated Half-Bridge MOSFET
„ Floating Channel for Bootstrap Operation up to +550V
„ Low Start-up and Operating Current: 120μA, 2.6mA
„ Under-Voltage Lockout with 1.8V of Hysteresis
„ Adjustable Run Frequency and Preheat Time
„ Internal Active ZVS Control
„ Internal Protection Function (No Lamp)
„ Internal Clamping Zener Diode
„ High Accuracy Oscillator
„ Soft-Start Functionality
Applications
„ Compact Fluorescent Lamp Ballast
Description
The FAN7710, developed using Fairchild’s unique high-
voltage process and system-in-package (SiP) concept, is
a ballast control integrated circuit (IC) for a compact
fluorescent lamp (CFL). The FAN7710 controls internal
high-voltage stress and delivers 20W to the lamp at
310V_DC voltage. FAN7710 incorporates a preheating /
ignition function, controlled by an user-selected external
capacitor, to increase lamp life. The FAN7710 detects
switch operation from after ignition-mode through an
internal active Zero-Voltage Switching (ZVS) control
circuit. This control scheme enables the FAN7710 to
detect an open-lamp condition, without the expense of
external circuitry, and prevents stress on MOSFETs. The
high-side driver built into the FAN7710 has a common-
mode noise cancellation circuit that provides robust
operation against high-dv/dt noise intrusion.
8-DIP
Ordering Information
Part Number
FAN7710N
Package
8-DIP
Pb-Free Operating Temperature Range Packing Method
Yes
-25°C ~ 125°C
Tube
© 2007 Fairchild Semiconductor Corporation
FAN7710 Rev. 1.0.2
www.fairchildsemi.com