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    ST1S41PUR

    ST1S41PUR

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    ST1S41PHR

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    4 A step-down switching regulator
    Learn More about ST1S41PHR

    Quantity $ per Unit Savings
    1 - 9$2.150%
    10 - 24$1.9310%
    25 - 99$1.8215%
    100 - 249$1.5528%
    250 - 499$1.4632%
    500$1.2741%
    500 + Contact Sales
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    In stock
    $2.15
    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 NamePowerSO-8

    The ST1S41 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.


    The ST1S41 integrates 95 mΩ high-side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.


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


    The ST1S41 is available in VFQFPN 4 mm x 4 mm 8-lead package and HSOP-8.

    Key features
    • 4 A output current
    • 4.0 V to 18 V input voltage
    • Output voltage adjustable from 0.8 V
    • 850 kHz switching frequency
    • Internal soft-start
    • Integrated 95 mΩ and 69 mΩ power MOSFETs
    • All ceramic capacitor
    • Enable
    • Cycle-by-cycle current limiting
    • Current foldback short-circuit protection
    • VFQFPN 4x4-8L and HSOP-8 packages
    Associated Products