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KA7543 - Advanced Feedback Dimming Ballast Control IC

General Description

The KA7543 is an advanced lamp current feedback dimming control IC.

Key Features

  • Lamp Current Feedback Soft Start on Feedback Voltage Dimming (0V~2V) on Feedback Switch off Control (Vdm=5V) Soft Dimming Control No Lamp Protection One Lamp Detection for Feedback Abnormal Protection Low Start-up and Operating Supply Current UVLO with 1.8V Hysteresis Totem Pole Output Trimmed 1.5% Internal Bandgap Reference 14-DIP & 14-SOP.

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Other Datasheets by Fairchild (now onsemi)

Part Number Description
KA7541 Simple Ballast Controller
KA7542 VOLTAGE DETECTOR
KA75420 Voltage Detector
KA75420M Voltage Detector
KA75420Z Voltage Detector

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.fairchildsemi.com KA7543 Advanced Feedback Dimming Ballast Control IC Features • • • • • • • • • • • • • Lamp Current Feedback Soft Start on Feedback Voltage Dimming (0V~2V) on Feedback Switch off Control (Vdm=5V) Soft Dimming Control No Lamp Protection One Lamp Detection for Feedback Abnormal Protection Low Start-up and Operating Supply Current UVLO with 1.8V Hysteresis Totem Pole Output Trimmed 1.5% Internal Bandgap Reference 14-DIP & 14-SOP Descriptions The KA7543 is an advanced lamp current feedback dimming control IC. This ballast control IC provides all of the necessary features to implement wide range dimming control, soft start and constant power consumption for intelligent electronic ballast systems.