SY21712VDC-Products-Silergy Corp

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SY21712VDC (SY81012VDC)

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16V/12A Synchronous Step Down Regulator
Datasheet
SY21712VDC 16V/12A Synchronous Step Down Regulator Datasheet
    Part numberSY21712VDC
    Channel(#)1
    Vin (min) (V)2.7
    Vin (max) (V)16
    Switching frequency (min)(kHz)600
    Switching frequency (max)(kHz)1000
    Vout (min) (V)0.6
    Vout (max) (V)5.5
    Iout (max) (A)12
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)1(over temperature)
    Vout accuracy(±%)
    Control modeCOT+Ripple
    Duty cycle (max)(%)75
    Operation modeFCCM/PFM Selectable
    Iq (typ) (uA)650
    FeaturesPower good,Output discharge,Programmable current limit,Soft start,Hiccup SCP
    PackageQFN3×4-19
    Operating temperature range(°C)-40 to 125
    Functional safety category
    • Wide Input Voltage Range:

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

    ----2.7V to 16V if VCC is Supplied by External 3.3V DC Source

    • Low RDS(ON) for Internal Switches (Top/Bottom): 12.6mΩ/4.3mΩ
    • 0.6V ±1% Voltage Reference Over Temperature Range (TJ = -40°C to 125°C)
    • Adopt Constant-on-time Architecture and Frequency Lock Loop
    • Instant PWM Architecture to Achieve Fast Transient Response
    • 600kHz, 800kHz and 1000kHz Switching Frequency Operation Selected by MODE Pin
    • PFM/FCCM Light Load Operation Mode Selected by MODE Pin
    • Programmable Bottom Valley Limit by ILMT Pin
    • Reliable Protection Mode: Auto-Recovery Mode for UVP, UVLO, OTP and OVP
    • Cycle-by-cycle Valley Current Limit and Peak Current Limit
    • Cycle-by-cycle Reverse Current Limit
    • Internal Soft-start Limits the Inrush Current
    • Programmable Soft-start Time by SS Pin
    • Smooth Soft-start with Output Pre-biased Function
    • Adjustable Input Voltage UVLO by EN Pin
    • Power Good Indicator
    • Differential Output Voltage Remote Sense
    • Output Discharge Function
    • RoHS Compliant and Halogen Free
    • Compact Package: QFN3×4-19

     

    The SY21712 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 12A current. The device integrates high-side power switch and low-side synchronous rectifier with very low RDS(ON) to minimize the conduction loss. It provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over TJ= -40°C to 125°C.

     

    The SY21712 operates over a wide input voltage range from 2.7V to 16V. The DC/DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications. Cycle-by-cycle current limit, hiccup over current protection and thermal shutdown protect the device during an over current condition

     

    Technical Documentation