DESCRIPTION
The device is a monolithic high voltage integrated circuit designed to drive CFL and small TL lamps with a minimum part count.
It provides all the necessary functions for proper preheat, ignition and steady state operation of the lamp:

♦ variable frequency oscillator;
♦ settable preheating and ignition time;
♦ capacitive mode protection;
♦ lamp power independent from mains voltage variation.

Besides the control functions, the IC provides the level shift and drive function for two external power MOS FETs in a half-bridge topology.

■ BCD-OFF LINE TECHNOLOGY
■ FLOATING SUPPLY VOLTAGE UP TO 570V
■ GND REFERRED SUPPLY VOLTAGE UP TO 18V
■ UNDER VOLTAGE LOCK OUT
■ CLAMPING ON Vs
■ DRIVER CURRENT CAPABILITY:
   30mA SOURCE
   70mA SINK
■ PREHEAT AND FREQUENCY SHIFT TIMING