DS3991

Low-Cost CCFL Controller

Full-Featured Single-Channel CCFL Controller

Part Details

  • CCFL Controller for Backlighting LCD Panels
  • Minimal External Components Required
  • Lamp Fault Monitoring for Lamp-Open, Lamp-Overcurrent, Failure-to-Strike, and Overvoltage Conditions
  • Accurate (±5%) On-Board Oscillator for Lamp Frequency (40kHz to 80kHz)
  • Accurate (±5%) On-Board Oscillator for DPWM Burst-Dimming Frequency (80Hz to 300Hz)
  • Device Supply Undervoltage Lockout
  • Inverter Supply Undervoltage and Overvoltage Lockouts
  • Soft-Start on Burst-Dimming Minimizes Audible Transformer Noise
  • Strike Frequency Boost
  • 100% to < 10% Dimming Range
  • Low Cost
  • Single-Supply Operation Range: 4.5V to 5.5V
  • Temperature Range: -40°C to +85°C
  • 16-Pin SO Package (150 mils)
DS3991
Low-Cost CCFL Controller
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