IR2156

Features Ballast control and half bridge driver in one IC Programmable preheat frequency Programmable preheat time Internal ignition ramp Programmable over-current threshold Programmable run frequency IR2156(S)PbF BALLAST CONTROL IC Programmable dead time DC bus under-voltage reset Shutdown pin with hysteresis Internal 15.6V zener clamp diode on Vcc Micropower startup (150 µA) Latch immunity and ESD protection Description The IR2156 incorporates a high voltage halfbridge gate driver with a programmable oscillator and state diagram to form a complete ballast control IC. The IR2156 features include programmable preheat and run frequencies, programmable preheat time, programmable dead-time, and programmable overcurrent protection. Comprehensive protection features such as protection from failure of a lamp to strike, filament failures, as well as an automatic restart function, have been included in the design. Packages IR2156SPBF SOICN14 Application Diagram IR2156PBF PDIP14 IR2156 1 IR2156(S)PbF Absolute Maximum Ratings Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The Thermal Resistance and Power Dissipation ratings are measured under board mounted and still air conditions. Symbol Definition Min. Max. Units VB VS VHO VLO High side floating supply voltage High side floating supply offset voltage High side...