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    Synchronous Step-Up Converter with Ultra Low Quiescent Current
    Synchronous Step-Up Converter with Ultra Low Quiescent Current

    The SGM66099 is a synchronous step-up converter with 0.65μA ultra low quiescent current. It is designed for products powered by alkaline battery, NiMH rechargeable battery, Li-Mn battery or rechargeable Li-Ion battery, for which high efficiency under light load condition is critical to achieve long battery life operation.

    The SGM66099 step-up converter only consumes 0.65μA quiescent current under light load condition and can achieve up to 75% efficiency at 10μA load with fixed output voltage version. It can also support up to 300mA output current from 3.3V to 5V conversion, and achieve up to 93% efficiency at 200mA load.

    The SGM66099 also offers both down mode and pass-through operation for different applications. In down mode, the output voltage can still be regulated at target value even when input voltage is higher than output voltage. In pass-through mode, the output voltage follows input voltage. The SGM66099 exits down mode and enters into pass-through mode when VIN > VOUT + 0.3V.

    The SGM66099 supports true shutdown function when it is disabled, which disconnects the load from the input supply to reduce the current consumption.

    The SGM66099 offers both adjustable output voltage version and fixed output voltage versions. It is available in Green WLCSP-1.22×0.83-6B and TDFN-2×2-6AL packages.



    • Operating Input Voltage Range: 0.9V to 5.2V

    • Ultra Low Quiescent Current:

        0.6μA Ultra Low IQ into VOUT Pin

        0.05μA Ultra Low IQ into VIN Pin

    • 1.2MHz Fixed Frequency Operation

    • Adjustable Output Voltage from 2.5V to 5.2V

    • Fixed Output Voltage Versions Available

    • Power-Save Mode for Improved Efficiency at Low Output Power

    • Regulated Output Voltage in Down Mode

    • True Disconnection During Shutdown

    • Up to 75% Efficiency at 10μA Load with Fixed Output Voltage Version

    • Up to 93% Efficiency from 10mA to 300mA Load

    • Operating Ambient Temperature Ranges:

        Temperature Grade Y: -40 to +85

        Temperature Grade X: -40 to +125

    • Available in Green WLCSP-1.22×0.83-6B and TDFN-2×2-6AL Packages


    Memory LCD Bias

    Optical Heart Rate Monitor LED Bias

    Wearable Applications

    Low Power Wireless Applications

    Portable Products

    Battery Powered Systems

    Part NumberStatusPackagePinsPb-FreeTemp Range
    SGM66099-ADJXTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-ADJXG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-5.0XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-5.0XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-4.5XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-4.5XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-3.6XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-3.6XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-3.3XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-3.3XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-3.0XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-3.0XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-2.5XTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +125℃
    SGM66099-2.5XG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +125℃
    SGM66099-ADJYTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-ADJYG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-5.0YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-5.0YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-4.5YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-4.5YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-3.6YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-3.6YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-3.3YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-3.3YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-3.0YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-3.0YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃
    SGM66099-2.5YTDI6G/TRProductionTDFN-2×2-6AL6Y-40℃ to +85℃
    SGM66099-2.5YG/TRProductionWLCSP-1.22×0.83-6B6Y-40℃ to +85℃