Features
• Buck, full-bridge and lamp control in one IC
• Continuous/critical-conduction mode buck control
• 600V high and low-side full-bridge driver
• 600V high-side buck Driver
• Low-side ignition FET gate driver
• Integrated bootstrap FETs for full-bridge high-side drivers
• Constant lamp power control
• Programmable buck cycle-by-cycle over-current protection
• Programmable buck output voltage limitation
• Programmable lamp current limitation
• Programmable full-bridge frequency
• Fault latch reset input
• Programmable ignition counter (21sec/64sec typical)
• Programmable lamp under-voltage fault counter (197sec typical) for short-circuit or lamp does not warm-up
• Fast transient lamp under-voltage event counter (16384 typical) for arc instability or end-of-life
• Programmable lamp over-voltage fault counter (787sec typical) for open-circuit or lamp extinguishes
• Programmable good fault reset counter (2730sec typical)
• Micro-controller compatible timing thresholds
• Internal 15.6V zener clamp diode on VCC
• Micropower startup (150µA)
• Latch immunity and ESD protection on all pins