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Datasheet Linear Technology LT1931A

ManufacturerLinear Technology

1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT


  • Download » Datasheet, PDF, 459 Kb, Revision: A
    LT1931/LT1931A - 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT
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    1.2MHz/2.2MHz Inverting
    DC/DC Converters in ThinSOT
    U FEATURES DESCRIPTIO ■ The LT®1931/LT1931A are the industry’s highest power
    inverting SOT-23 current mode DC/DC converters. Both
    parts include a 1A integrated switch allowing high current
    outputs to be generated in a small footprint. The LT1931
    switches at 1.2MHz while the LT1931A switches at 2.2MHz.
    These high speeds enable the use of tiny, low cost
    capacitors and inductors 2mm or less in height. The
    LT1931 is capable of generating – 5V at 350mA or –12V
    at 150mA from a 5V supply, while the LT1931A can
    generate –5V at 300mA using significantly smaller inductors. Both parts are easy pin-for-pin upgrades for higher
    power LT1611 applications. ■

    ■ Fixed Frequency 1.2MHz/2.2MHz Operation
    Very Low Noise: 1mVP-P Output Ripple ...



Package CodeS5S5S5S5S5S5


Demo BoardsDC397A,DC383BDC397A,DC383BDC397A,DC383BDC397A,DC383BDC397A,DC383BDC397A,DC383B
Design ToolsLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice File
Export Control, yes/nonononononono
Frequency, kHz220022002200220022002200
Integrated Inductor, yes/nonononononono
Ishutdown, A0.
Isupply, mA4.
Monolithic, yes/noyesyesyesyesyesyes
Number of Outputs111111
Operating Temperature Range, °C0 to 850 to 850 to 85-40 to 85-40 to 85-40 to 85
Polyphase, yes/nonononononono
Switch Current, A1.
Synchronous, yes/nonononononono
Topology 1InvertingInvertingInvertingInvertingInvertingInverting
Vin Max, V161616161616
Vin Min, V2.
Vout Max, V343434343434
Vswitch Max, V363636363636

Eco Plan

Other Options


Moldel Line

Series: LT1931A (6)

Manufacturer's Classification

  • Power Management > Switching Regulator > Inverting Regulators | LCD/CCD/OLED Bias

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