DS3991

 

 

Features

 CCFL Controller for Backlighting LCD Panels

 Minimal External Components Required

 Lamp Fault Monitoring for Lamp-Open, LampOvercurrent, 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)

 

 

 

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