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DS3882

Maxim Integrated Products
Part Number DS3882
Manufacturer Maxim Integrated Products
Description Dual-Channel Automotive CCFL Controller
Published Sep 24, 2007
Detailed Description www.DataSheet4U.com Rev 0; 3/06 Dual-Channel Automotive CCFL Controller General Description The DS3882 is a dual-channe...
Datasheet PDF File DS3882 PDF File

DS3882
DS3882

Overview
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) and DPWM Burst-Dimming Frequency (22.
5Hz to 440Hz) o Lamp and DPWM Frequencies can be Synchronized with External Sources to Reduce Visual LCD Artifacts in Video Applications o Optional Spread-Spectrum Lamp Clock Reduces EMI o Lamp Frequency can be Stepped Up or Down to Move EMI Spurs Out of Band o Lamp Current Overdrive Mode with Automatic Turn-Off Quickly Warms Lamp in Cold Temperatures o Analog and Digital Brightness Control o 300:1 Dimming Range Possible Using the Digital Brightness Control...


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