ADD8733
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ADD8733

Integrated TFT Panel Power Supply with Gate Modulation and VCOM

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Features
  • Step-up switching regulator with 3 A switch current limit
    8 V to 16.5 V input voltage range
    Adjustable output voltage up to 20 V
    1.2 A series switch for power sequencing
    Overvoltage protection (OVP)
  • Step-down switching regulator with 3 A switch current limit
    8 V to 16.5 V input voltage range
    Adjustable output voltage down to 2.5 V
  • Gate pulse modulator circuitry
    Independently adjustable delay and falling slope
  • Positive charge-pump regulator for VGH
  • Negative charge-pump regulator for VGL
  • Two VCOM amplifiers
  • General
    Power supply sequencing
    Thermal fault protection
    650 kHz or 1.2 MHz PWM frequency
    Soft start
    Undervoltage lockout (UVLO)
    48-lead RoHS compliant LFCSP
Additional Details
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The ADD8733 is a 4-channel regulator with two VCOM amplifiers and gate pulse modulation (GPM) that provides all the necessary voltages for thin film transistor (TFT) liquid crystal displays (LCD). Included is a step-up regulator, a step-down regulator for digital logic, two VCOM amplifiers, two charge-pump regulators for VGH and VGL, and an integrated gate pulse modulator.

By offering a complete power integration solution optimized for TFT LCD TVs and monitors, the ADD8733 helps to lower cost, simplify board design, and increase performance over existing solutions. The ADD8733 is offered in a 48-lead RoHS compliant LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

Applications

  • TFT LCD panels for TVs and monitors
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    ADD8733

    Documentation

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    Data Sheet

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    UPDATED 04/01/2007
    English

    ADD8733: Integrated TFT Panel Power Supply with Gate Modulation and VCOM Preliminary Data Sheet (Rev.PrA)

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