SY81058ABT-Products-Silergy Corp

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SY81058ABT

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High Efficiency, 3A, 18V Input Synchronous Buck Converter
Datasheet
SY81058ABT High Efficiency, 3A, 18V Input Synchronous Buck Converter Datasheet
    Part numberSY81058ABT
    Channel(#)1
    Vin (min) (V)4.5
    Vin (max) (V)18
    Switching frequency (min)(kHz)500
    Switching frequency (max)(kHz)500
    Vout (min) (V)0.6
    Vout (max) (V)9.2
    Iout (max) (A)3
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)1.5
    Vout accuracy(±%)
    Control mode
    Duty cycle (max)(%)
    Operation mode
    Iq (typ) (uA)
    Features
    Package
    Operating temperature range(°C)
    Functional safety category

    ·       Low RDS(ON) for Internal MOSFETs: 80mΩ Top, 40mΩ Bottom

    ·       Wide Input Voltage Range: 4.5V ~ 18V

    ·       Up to 3A Output Current

    ·       ±1.5% 0.6V Reference

    ·       Precise EN Threshold

    ·       Pulse-Frequency Modulation (PFM) Mode Operation for SY81058 and SY81058C

    ·       Forced Continuous Conduction Mode (FCCM) Operation for SY81058E and SY81058B

    ·       Internal Soft-Start Limits the Inrush Current

    ·       Support Smooth Startup with Pre-Biased Output

    ·       500kHz Switching Frequency Minimizes the External Components for SY81058 and SY81058E

    ·       1200kHz Switching Frequency Minimizes the External Components for SY81058C and SY81058B

    ·       Constant On-time and Ripple-Based Control to Achieve Fast Transient Responses

    ·       Stable with 10µF COUT

    ·       Cycle-by-Cycle Valley and Peak Current Limit Protection

    ·       Hic-Cup Mode Output Under Voltage Protection

    ·       Auto-Recovery Mode Over Temperature Protection

    ·       Input Under Voltage Lockout (UVLO)

    ·       RoHS-Compliant and Halogen-Free

    ·       Compact Package: SOT23-6

    ·       MSL Rating: MSL1 (SOT23-6)

    The SY81058x is high efficiency synchronous buck converter operates over a wide input voltage range of 4.5V to 18V, and can deliver an output current up to 3A. It integrates a top MOSFET and a bottom MOSFET with very low RDS(ON) to minimize conduction loss. The 500kHz or 1200kHz high pseudo-constant switching frequency enables using small external inductor and capacitor values.

    Technical Documentation