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Datasheet Linear Technology LT1943

ManufacturerLinear Technology

High Current Quad Output Regulator for TFT LCD Panels


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    LT1943 - High Current Quad Output Regulator for TFT LCD Panels
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    High Current Quad Output
    Regulator for TFT LCD Panels
    U FEATURES DESCRIPTIO ■ The LT®1943 quad output adjustable switching regulator
    provides power for large TFT LCD panels. The device,
    housed in a low profile 28 pin thermally enhanced TSSOP
    package, can generate a 3.3V or 5V logic supply along with
    the triple output supply required for the TFT LCD panel.
    Operating from an input range of 4.5V to 22V, a step-down
    regulator provides a low voltage output VLOGIC with up to
    2A current. A high-power step-up converter, a lowerpower step-up converter and an inverting converter provide the three independent output voltages AVDD, VON and
    VOFF required by the LCD panel. A high-side PNP provides
    delayed turn-on of the VON signal and can handle up to
    30mA. Protection circuitry ensures that VON is disabled if
    any of the four outputs are more than 10% below the
    programmed voltage. ■

    ■ 4 Integrated Switches: 2.4A Buck, 2.6A Boost, ...



Package CodeFEFE


Boost Switch Current, A0.35, 2.60.35, 2.6
Buck Output Current, A2.42.4
Demo BoardsDC620A,DC697ADC620A,DC697A
Design ToolsLTspice ModelLTspice Model
Export Control, yes/nonono
FeaturesIntegrated Schottky Diode, Power GoodIntegrated Schottky Diode, Power Good
Number of Outputs44
Operating Temperature Range, °C0 to 850 to 85
Vin Max, V2222
Vin Min, V4.54.5

Eco Plan


Moldel Line

Series: LT1943 (2)

Manufacturer's Classification

  • Power Management > Switching Regulator > LCD/CCD/OLED Bias
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost | Multiple Output Boost
  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck
  • Power Management > PMIC & Multifunction > Multitopology DC/DC

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