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    ST1S50PUR

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    4 A Monolithic synchronous step-down converter with high efficiency at light load
    Learn More about ST1S50PUR

    Quantity $ per Unit Savings
    1 - 9$2.550%
    10 - 24$2.3010%
    25 - 50$2.1815%
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    Parameter NameParameter Value
    Input Voltage Min Volt4.0
    Input Voltage Max Volt18.0
    ECCN USEAR99
    ECCN EUNEC
    Packing TypeTape And Reel
    RoHs compliantEcopack2
    GradeIndustrial
    Package NameDFN10 3X3

    The ST1S50 device is a 500 kHz fixed frequency PWM synchronous step-down regulator. The ST1S50 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to 0.88 x VIN.


    The ST1S50 device integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.


    The peak current mode control with a special PFM mode enables high efficiency at a light load.


    The ST1S50 device is available in a VFDFPN10 3 x 3 x 1 mm - 10 leads package.

    Key features
    • 4 A output current
    • 4.0 V to 18 V input voltage
    • Output voltage adjustable from 0.8 V to 0.88 x VIN
    • 500 kHz switching frequency
    • High efficiency at light load
    • Programmable soft-start and enable
    • Integrated 95 mΩ and 69 mΩ power MOSFETs
    • All ceramic capacitor
    • Power Good
    • Cycle-by-cycle current limiting
    • Short-circuit protection
    • VFDFPN10 3 x 3 x 1 mm - 10 L
    Associated Products