The DS3984 is a 4-channel controller for cold-cathode
fluorescent lamps (CCFLs) used to backlight liquid
crystal displays (LCDs) in TV and PC monitor applications.
The DS3984 supports configurations of 1 to 4
lamps, and multiple DS3984 controllers can be cascaded
to support applications requiring more than 4 lamps.
Key Features
Applications/Uses
High-Density CCFL Controller for LCD TV and PC Monitor Backlights
Can Be Easily Cascaded to Support More Than 4 Lamps
Minimal External Components
Analog Brightness Control
Per-Channel Lamp Control Ensures Equal Brightness Among Lamps and Maximizes Lamp Life
Gate Driver Phasing Minimizes DC Supply Current Surges
Per-Channel Lamp Fault Monitoring for Lamp Open, Lamp Overcurrent, Failure to Strike, and Overvoltage Conditions
Accurate (±5%) Independent On-Board Oscillators for Lamp Frequency (40kHz to 80kHz) and DPWM Burst Dimming Frequency (22.5Hz to 440Hz)
Can Be Synchronized to External Sources for the Lamp and DPWM Frequencies
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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