DS3882 Features
♦ Dual-Channel CCFL Controllers for Backlighting
LCD Panels and Instrument Clusters in
Automotive Navigation/Infotainment Applications
♦ Minimal External Components Required
♦ I2C Interface
♦ Per-Channel Lamp-Fault Monitoring for Lamp-
Open, Lamp-Overcurrent, Failure to Strike, and
Overvoltage Conditions
♦ Status Register Reports Fault Conditions
♦ Accurate (±5%) Independent On-Board Oscillators
for Lamp Frequency (40kHz to 100kHz) and DPWM
Burst-Dimming Frequency (22.5Hz to 440Hz)
♦ Lamp and DPWM Frequencies can be
Synchronized with External Sources to Reduce
Visual LCD Artifacts in Video Applications
♦ Optional Spread-Spectrum Lamp Clock Reduces
EMI
♦ Lamp Frequency can be Stepped Up or Down to
Move EMI Spurs Out of Band
♦ Lamp Current Overdrive Mode with Automatic
Turn-Off Quickly Warms Lamp in Cold
Temperatures
♦ Analog and Digital Brightness Control
♦ 300:1 Dimming Range Possible Using the Digital
Brightness Control Option
♦ Programmable Soft-Start Minimizes Audible
Transformer Noise
♦ On-Board Nonvolatile (NV) Memory Allows Device
Customization
♦ 8-Byte NV User Memory for Storage of Serial
Numbers and Date Codes
♦ Low-Power Standby Mode
♦ 4.75V to 5.25V Single-Supply Operation
♦ Temperature Range: -40°C to +105°C
♦ 28-Pin TSSOP Package
