DS3882

www.DataSheet4U.com Rev 0; 3/06 Dual-Channel Automotive CCFL Controller General Description The DS3882 is a dual-channel cold-cathode fluorescent lamp (CCFL) controller for automotive applications that provides up to 300:1 dimming. It is ideal for driving CCFLs used to backlight liquid crystal displays (LCDs) in navigation and infotainment applications and for driving CCFLs used to backlight instrument clusters. The DS3882 is also appropriate for use in marine and aviation applications. The DS3882 features EMI suppression functionality and provides a lamp current overdrive mode for rapid lamp heating in cold weather conditions. The DS3882 supports configurations of 1 or 2 lamps with fully independent lamp control and minimal external components. Multiple DS3882 controllers can be cascaded to support applications requiring more than 2 lamps. Control of the DS3882, after initial programming setup, can be completely achieved through I2C* software communication. Many DS3882 functions are also pin-controllable if software control is not desired. Features o Dual-Channel CCFL Controllers for Backlighting LCD Panels and Instrument Clusters in Automotive Navigation/Infotainment Applications o Minimal External Components Required o I2C Interface o Per-Channel Lamp-Fault Monitoring for LampOpen, Lamp-Overcurrent, Failure to Strike, and Overvoltage Conditions o Status Register Reports Fault Conditions o Accurate (±5%) Independent On-Board Oscillators for Lamp Frequency (40kHz to 100kHz...