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Datasheet Linear Technology LT1946

ManufacturerLinear Technology

1.2MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start


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    LT1946 - 1.2MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start
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    1.2MHz Boost
    DC/DC Converter with
    1.5A Switch and Soft-Start

    ■ DESCRIPTIO The LT®1946 is a fixed frequency step-up DC/DC converter
    containing an internal 1.5A, 36V switch. Capable of generating 8V at 430mA from a 3.3V input, the LT1946 is ideal
    for large TFT-LCD panel power supplies. The LT1946
    switches at 1.2MHz, allowing the use of tiny, low profile
    inductors and low value ceramic capacitors. Loop compensation can be either internal or external, giving the user
    flexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output
    capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during
    start-up. 1.5A, 36V Internal Switch
    1.2MHz Switching Frequency
    Integrated Soft-Start Function
    Output Voltage Up to 34V
    Low VCESAT Switch: 300mV at 1.5A (Typ) ...



Package CodeMS8MS8MS8EMS8E


Demo BoardsDC459ADC459ADC459ADC459A
Design ToolsLTspice ModelLTspice ModelLTspice ModelLTspice Model
Export Control, yes/nonononono
FeaturesSoft StartSoft StartSoft StartSoft Start
Frequency, kHz1200120012001200
Ishutdown, A.
Isupply, mA3.
Monolithic, yes/noyesyesyesyes
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 850 to 850 to 85
Switch Current, A2.
Synchronous, yes/nonononono
TopologyBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, Flyback
Vin Max, V16161616
Vin Min, V2.452.452.452.45
Vin Min Startup, V2.452.452.452.45
Vout Max, V36363636
Vout Min, V1.
Vswitch Max, V36363636

Eco Plan

Moldel Line

Series: LT1946 (4)

Manufacturer's Classification

  • Power Management > Switching Regulator > LCD/CCD/OLED Bias
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

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