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UCC3974 Datasheet Dual Cold Cathode Fluorescent Lamp Controller

Manufacturer: Texas Instruments

Overview: UCC2974 UCC3974 ą SLUS485A – JULY 2001 – REVISED NOVEMBER 2001 DUAL COLD CATHODE FLUORESCENT LAMP.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

Design goals for a cold cathode fluorescent lamp (CCFL) converter used for a liquid crystal display (LCD) monitor application include small size, high efficiency, and low cost.

The UCC2974/UCC3974 CCFL controllers provide the necessary circuit blocks to implement a highly efficient LCD monitor backlight supply in a small 16-pin TSSOP package.

The device

Key Features

  • D Synchronous or Nonsynchronous Operation D Dual Output and Control Stages D BiCMOS Technology D Accurate Current Control with 2-mA Typical Supply Current D Analog or Digital Low-Frequency Dimming Capability D Open Lamp Protection with Voltage Clamp D 4.5-V to 25-V Operation D PWM Frequencies Synchronized to External Resonant Tanks D TSSOP-16 (PW) Package.

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