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SY21243B3RHC

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High Efficiency Fast Response, 8A, 28V Input, Fixed 3.338V Output Synchronous Step Down Regulator with 100mA 3.3V LDO
Datasheet
SY21243B3RHC High Efficiency Fast Response, 8A, 28V Input, Fixed 3.338V Output Synchronous Step Down Regulator with 100mA 3.3V LDO Datasheet
    Part NumberSY21243B3RHC
    Vin_min (V)4
    Vin_max (V)24
    Vo_min (V)3.338
    Io_max (A)8
    Vref Accuracy
    Fsw (MHz)0.6
    Iq (uA)85
    PackageQFN2.5x2.5-16
    Protection ModeOVP,Latch-off SCP
    Features / Special FunctionPower Good Indicator,100mA LDO Current Capability,Auto-Discharge
    • Low RDS(ON) for Internal Switches (top/bottom): 20/10 mΩ
    • Wide Input Voltage Range: 4~24V
    • Integrated Bypass Switch: 1.5Ω
    • Instant PWM Architecture to Achieve Fast Transient Responses
    • Internal Soft-start Limits the Inrush Current
    • Pseudo-constant Frequency: 600kHz
    • Fixed 3.338V Output Voltage
    • 8A Output Current Capability
    • 100mA LDO Current Capability
    • ±1% Internal Reference Voltage
    • PFM/USM Selectable Light Load Operation Mode
    • Power Good Indicator
    • Output Discharge Function
    • Cycle-by-cycle Valley and Peak Current Limit Protection
    • Latch-off Mode Output Under Voltage Protection for Buck
    • Latch-off Mode Output Over Voltage Protection for Buck
    • Latch-off Mode Over Temperature Protection for Buck
    • Auto-recovery Mode Output Under Voltage Protection for LDO
    • Auto-recovery Mode Over Temperature Protection for LDO
    • Input Under Voltage Lock-out(UVLO)
    • RoHS Compliant and Halogen Free
    • Compact package: QFN2.5×2.5-16

     

    Evaluation Board

    • 21243B3-11

      Photo of evaluation board

    • 21243B3-12

      Photo of evaluation board

    • 21243B3-13

      Photo of evaluation board

    • 21243B3-14

      Photo of evaluation board

    • 21243B3-15

      Photo of evaluation board

    EVB_SY21243B3RHC

    EVB_SY21243B3RHC_1 is intended for evaluating 600kHz, 8A continuous output current, 24V input synchronous Buck regulator with one 3.3V 100mA LDO.

    Technical Documentation

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