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    📢Shop now for EEPROM products with FREE SHIPPING code EEPROM-M95-FREESHIP. Check out our M95P32-IXCST/EF and M95P16-IXMNT/E today! 

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    AST1S31PUR

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    Up to 4 V, 3 A step-down 1.5 MHz switching regulator for automotive applications
    Learn More about AST1S31PUR

    Quantity $ per Unit Savings
    1 - 9$3.650%
    10 - 20$3.329%
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    In stock
    $3.65
    Parameter NameParameter Value
    Input Voltage Min Volt2.8
    Input Voltage Max Volt4.0
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTape And Reel
    RoHs compliantEcopack2
    GradeAutomotive
    Package NameVFDFPN 8 3x3x1.0

    The AST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The AST1S31 device operates from 2.8 V to 4 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.


    The AST1S31 integrates a 70 mΩ high-side switch and a 55 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.


    The peak current mode control with an internal compensation deliver a very compact solution with a minimum component count.


    The AST1S31 device is available in a 3 x 3 mm, 8 leads VFDFPN package.

    Key features
    • AECQ100 qualification
    • 3 A DC output current
    • 2.8 V to 4 V input voltage
    • Output voltage adjustable from 0.8 V
    • 1.5 MHz switching frequency
    • Internal soft-start and enable
    • Integrated 70 mΩ and 55 mΩ power MOSFETs
    • All ceramic capacitor
    • Power Good (POR)
    • Cycle-by-cycle current limiting
    • Current foldback short-circuit protection
    • VFDFPN 3 x 3 - 8L package