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UCC3973 Datasheet Bicmos Cold Cathode Fluorescent Lamp Driver Controller

Manufacturer: Unitrode

Overview: UCC1972/3 UCC2972/3 UCC3972/3 BiCMOS Cold Cathode Fluorescent Lamp Driver.

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

Datasheet Details

Part number UCC3973
Manufacturer Unitrode
File Size 1.10 MB
Description BiCMOS Cold Cathode Fluorescent Lamp Driver Controller
Datasheet UCC3973 UCC1972 Datasheet (PDF)

General Description

Design goals for a Cold Cathode Fluorescent Lamp (CCFL) converter used in a notebook computer or portable application include small size, high efficiency, and low cost.

The UCC3972/3 CCFL controllers provide the necessary circuit blocks to implement a highly efficient CCFL backlight power supply in a small footprint 8 pin TSSOP package.

The BiCMOS controllers typically consume less than 1mA of operating current, improving overall system efficiency when compared to bipolar controllers requiring 5mA to 10mA of operating current.

Key Features

  • 1mA Typical Supply Current.
  • Accurate Lamp Current Control.
  • Analog or Low Frequency Dimming Capability.
  • Open Lamp Protection.
  • Programmable Startup Delay.
  • 4.5V to 25V Operation.
  • PWM Frequency Synchronized to External Resonant Tank.
  • 8 Pin TSSOP and SOIC Packages Available.
  • Internal Voltage Clamp Protects Transformer from Over-voltage (UCC3973).

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UCC3973 Distributor