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