The L6567 is a monolithic high voltage integrated circuit designed by STMicroelectronics to drive CFL and small TL lamps with a minimum number of components. It provides all the necessary functions for proper preheating, ignition and steady state operation of the lamp, such as variable frequency oscillator, settable preheating and ignition time, capacitive mode protection, and lamp power independent from mains voltage variation. In addition to the control functions, the IC provides the level shift and drive function for two external power MOS FETs in a half-bridge topology.
The L6567 is a monolithic high voltage integrated circuit designed to drive Compact Fluorescent Lamps (CFL) and small Tubular Lamps (TL) with a minimum part count. It utilizes MultiPower BCD technology to provide all necessary functions for proper preheat, ignition, and steady-state operation of the lamp.
| Floating Supply Voltage | Up to 570V |
|---|---|
| GND Referred Supply Voltage | Up to 18V |
| Driver Current Capability (Source) | 30mA |
| Driver Current Capability (Sink) | 70mA |
| Preheat Time (Typical) | 1 sec |
| Number of Preheat Clocks | 16 |
| Number of Ignition Clocks | 15 |
| Storage Temperature | -40 to 150 °C |
The floating supply voltage can go up to 570V.
The device provides 30mA source and 70mA sink current capability.
The preheat time is determined by 16 clock cycles.
The typical preheat time is 1 second when Cp is 150nF.