SQ29090TXQ-Products-Silergy Corp

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SQ29090TXQ

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High Efficiency, 16V/20A Synchronous Step Down Regulator
    Part numberSQ29090TXQ
    Channel(#)1
    Vin (min) (V)2.9
    Vin (max) (V)16
    Switching frequency (min)(kHz)510(RMODE=0Ω)/690(RMODE=30.1Ω)/900(RMODE=60.4Ω)
    Switching frequency (max)(kHz)690(RMODE=0Ω)/910(RMODE=30.1Ω)/1100(RMODE=60.4Ω)
    Vout (min) (V)0.6
    Vout (max) (V)5.5
    Iout (max) (A)20
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)±1.0%
    Vout accuracy(±%)
    Control mode
    Duty cycle (max)(%)
    Operation modeFCCM/PFM Selectable
    Iq (typ) (uA)550
    FeaturesRemote sense, seamless ILMT, pre-bias startup, FCCM/PFM
    PackageQFN3x4-21
    Operating temperature range(°C)-40°C to 125°C
    Functional safety category

    Ÿ Wide Input Voltage Range:

    §   2.9V to 3.6V if VCC is Connected to IN

    (RC filter is needed from IN to VCC)

    §   2.9V to 16V if VCC is Supplied by External Source

    §   3.6V to 16V if VCC is Supplied by Internal LDO

    Ÿ Internal 8.6mΩ Power Switch and 2.5mΩ Synchronous Rectifier

    Ÿ Accurate Feedback Set Point: 0.6V ±1% from -40°C to 125°C

    Ÿ Differential Remote Sense

    Ÿ Fast Transient Response

    Ÿ 600kHz, 800kHz and 1000kHz Operating Frequency

    Ÿ Selectable Automatic High-efficiency Discontinuous Operating Mode at Light Loads

    Ÿ Programmable Valley Current Limit

    Ÿ Reliable Built-in Protections:

    §    Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP) and Over-temperature (OTP) Conditions

    §   Cycle-by-cycle Valley and Peak Current Limit (OCP)

    §   Hic-cup Mode after 128 Consecutive Cycles Valley Current Limit Protection

    §   Cycle-by-cycle Reverse Current Limit

    Ÿ Internal and Adjustable Soft-start to Limits Inrush Current

    Ÿ Smoothly Startup with Pre-biased VOUT

    Ÿ Power Good Output Monitor for Under-voltage and Over-voltage

    The SQ29090 is a high-efficiency synchronous step-down DC-DC regulator featuring internal power and synchronous rectifier switches capable of delivering 20A of continuous output current over a wide input voltage range, from as low as 2.9V up to 16V.  The output voltage is adjustable from 0.6V to 5.5V.

    Technical Documentation