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General description

The IC is a monolithic integrated circuit for driving electronically ballasted fluorescent lamps, with mains voltages up to 277 V (RMS) (nominal value). The circuit is made in a 650 V Bipolar CMOS DMOS (BCD) power-logic process. It provides the drive function for the two discrete power MOSFETs.

Besides the drive function, the IC also includes the level-shift circuit, the oscillator function, a lamp voltage monitor, a current control function, a timer function and protections.

特性 Features

Adjustable preheat time

Adjustable preheat current

Current controlled operating

Single ignition attempt

Adaptive non-overlap time control

Integrated high-voltage level-shift function

Power-down function

Protection against lamp failures or lamp removal

Capacitive mode protection

Applications

The circuit topology enables a broad range of ballast applications at different mains voltages for driving lamp types from T8, T5, PLC, T10, T12, PLL and PLT, for example.