SY20149AAC-Products-Silergy Corp

HomeProductsDC-DCDC-DC ConvertersBuck

SY20149AAC (SY8089AAC)

Not recommended for new designs
High Efficiency 5.5V, 2A continuous, 3A peak, 1MHz Synchronous Step Down Regulator
Datasheet
SY20149AAC High Efficiency 5.5V, 2A continuous, 3A peak, 1MHz Synchronous Step Down Regulator Datasheet
    Part numberSY20149AAC
    Channel(#)
    Vin (min) (V)2.7
    Vin (max) (V) 5.5
    Switching frequency (min)(kHz)
    Switching frequency (max)(kHz)
    Vout (min) (V)0.6
    Vout (max) (V)
    Iout (max) (A)2
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)±2%
    Vout accuracy(±%)
    Control mode
    Duty cycle (max)(%)
    Operation mode
    Iq (typ) (uA)
    FeaturesLatch off protection
    PackageSOT23-5
    Operating temperature range(°C)
    Functional safety category
    • Low RDS(ON) for internal switches(top/bottom):110mΩ/80mΩ
    • 2.7-5.5V input voltage range
    • 2A continuous, 3A peak load current capability
    • 1MHz switching frequency minimizes the external components
    • Internal softstart limits the inrush current
    • Latch off protection
    • 100% dropout operation
    • RoHS Compliant and Halogen Free
    • Compact package: SOT23-5

     The SY20149 and SY20149A are high-efficiency, high frequency synchronous step-down DC-DC regulator IC capable of delivering up to 2A output current. The SY20149 and SY20149A operate over a wide input voltage range from 2.7V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

     

    Low output voltage ripple and small external inductor and capacitor sizes are achieved with greater than 1MHz switching frequency.

     

    SY20149 integrates short circuit and over-voltage latch off protection.

    Technical Documentation