DS3988
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DS3988

8-Channel Cold-Cathode Fluorescent Lamp Controller

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Features
  • High-Density CCFL Controller for LCD TV and PC Monitor Backlights
  • Can Be Easily Cascaded to Support More Than 8 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
  • <10% to 100% Dimming Range
  • Programmable Soft-Start Minimizes Audible Transformer Noise
  • I²C-Compatible Serial Port and On-Board Nonvolatile (NV) Memory Allow Device Customization
  • 8-Byte NV User Memory for Storage of Serial Numbers and Date Codes
  • 4.5V to 5.5V Single-Supply Operation
  • -40°C to +85°C Temperature Range
  • 48-Lead TQFP (7mm x 7mm) Package
Additional Details
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The DS3988 is an 8-channel controller for cold-cathode fluorescent lamps (CCFLs) used to backlight liquid crystal displays (LCDs) in TV and PC monitor applications. The DS3988 supports configurations of 1 to 8 lamps, and multiple DS3988 controllers can be cascaded to support applications requiring more than 8 lamps.

Applications

  • LCD PC Monitors
  • LCD TVs
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DS3988

Documentation

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Data Sheet

1

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UPDATED 02/27/2006
English

DS3988: 8-Channel Cold-Cathode Fluorescent Lamp Controller Data Sheet (Rev.0)

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437.00K
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Reliability Data

1

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UPDATED 01/12/2023
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DS3988 Reliability Data redirect icon

22.43K

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Design Note

15

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UPDATED 03/26/2008
English
Enhancing the Gate-Drive Capacity of the DS39xx CCFL Controllers redirect icon

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UPDATED 07/21/2008
Chinese
增强DS39x系列CCFL控制器的栅极驱动能力 redirect icon

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UPDATED 07/07/2008
Japanese
DS39XX CCFLコントローラのゲート駆動能力の増大 redirect icon

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UPDATED 12/14/2007
English
Implementing Analog Dimming on the DS39xx CCFL Controllers redirect icon

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UPDATED 05/20/2008
Chinese
用DS39xx CCFL控制器实现模拟调光 redirect icon

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UPDATED 05/21/2008
Japanese
DS39xx CCFLコントローラによるアナログ調光の実装 redirect icon

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UPDATED 08/15/2010
Chinese
确定DS3xxx CCFL控制器的LCM和OVD门限 redirect icon

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UPDATED 09/06/2010
Japanese
CCFLコントローラDS3xxxのためのLCMとOVDスレッショルドの決定 redirect icon

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UPDATED 06/21/2006
English
CCFL Push-Pull Snubber Circuit redirect icon

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UPDATED 11/15/2006
Chinese
CCFL推挽式缓冲电路 redirect icon

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UPDATED 06/21/2006
Japanese
CCFLプッシュ/プルスナバ回路 redirect icon

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UPDATED 09/19/2005
English
Staggering the Burst Dimmer on CCFL Displays redirect icon

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UPDATED 05/31/2005
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CCFL Characteristics redirect icon

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UPDATED 10/26/2005
Chinese
CCFL特性 redirect icon

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UPDATED 11/23/2005
Japanese
CCFLの特性 redirect icon

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