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ADVANCED INFORMATION
Data Sheet No. PD60108B
IR2157
FULLY INTEGRATED BALLAST CONTROL IC
Features • Programmable preheat time & frequency • Programmable ignition ramp • Protection from failure-to-strike • Lamp filament sensing & protection • Protection from operation below resonance • Protection from low-line condition & automatic
restart (mimics a magnetic ballast)
Description
• Thermal overload protection • Programmable deadtime • Integrated 600V level-shifting gate driver • Internal 15.6V zener clamp diode on VCC • True micropower startup (150uA) • Latch immunity protection on all leads • ESD protection on all leads
Packages
The IR2157 is a fully integrated, fully protected 600V ballast control IC designed to drive virtually all types of rapid start fluorescent lamp ballasts.