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UC1871 - Resonant Fluorescent Lamp Driver

Datasheet Summary

Description

The UC1871 Family of IC’s is optimized for highly efficient fluorescent lamp control.

An additional PWM controller is integrated on the IC for applications requiring an additional supply, as in LCD displays.

Features

  • 1µA ICC when Disabled.
  • PWM Control for LCD Supply.
  • Zero Voltage Switched (ZVS) on Push-Pull Drivers.
  • Open Lamp Detect Circuitry.
  • 4.5V to 20V Operation.
  • Non-saturating Transformer Topology.

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Datasheet preview – UC1871

Datasheet Details

Part number UC1871
Manufacturer Unitrode
File Size 0.98 MB
Description Resonant Fluorescent Lamp Driver
Datasheet download datasheet UC1871 Datasheet
Additional preview pages of the UC1871 datasheet.

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Full PDF Text Transcription

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Resonant Fluorescent Lamp Driver UC1871 UC2871 UC3871 FEATURES • 1µA ICC when Disabled • PWM Control for LCD Supply • Zero Voltage Switched (ZVS) on Push-Pull Drivers • Open Lamp Detect Circuitry • 4.5V to 20V Operation • Non-saturating Transformer Topology DESCRIPTION The UC1871 Family of IC’s is optimized for highly efficient fluorescent lamp control. An additional PWM controller is integrated on the IC for applications requiring an additional supply, as in LCD displays. When disabled the IC draws only 1µA, providing a true disconnect feature, which is optimum for battery powered systems. The switching frequency of all outputs are synchronized to the resonant frequency of the external passive network, which provides Zero Voltage Switching on the Push-Pull drivers.
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