Microchip Technology Inc

MIC4950

In Production

The MIC4950 is a high-efficiency, 5A synchronous buck regulator with ultra-fast transient response perfectly suited for supplying processor core and I/O voltages from a 5V or 3.3V bus. The MIC4950 provides a switching frequency up to 3.3MHz while achieving peak efficiencies up to 95%. An additional benefit of high-frequency operation is very low output ripple voltage throughout the entire load range with the use of a small output capacitor. The MIC4950 is designed for use with a very small inductor, down to 1μH, and an output ceramic capacitor as small as 10μF without the need for external ripple injection. A wide range of output capacitor types and values can also be accommodated.

The MIC4950 supports safe start-up into a pre-biased output.

The MIC4950 is available in 8-pin SOIC and 10-pin 3mm — 4mm DFN packages with an operating junction temperature range from -40°C to +125°C. The MIC4930 is pin-to-pin compatible with the 5A-rated MIC4950YFL.

 

    Features

        • Input voltage: 2.7V to 5.5V
        • 5A output current
        • Up to 95% efficiency
        • Up to 3.3MHz operation
        • Safe start-up into a pre-biased output
        • Power Good output
        • Ultra-fast transient response
        • Low output voltage ripple
        • Low RDS(ON) integrated MOSFET switches
        • 0.01μA shutdown current
        • Thermal shutdown and current limit protection
        • Output voltage as low as 0.7V
        • 8-pin SOIC and 3mm — 4mm DFN-10L
        • -40°C to +125°C junction temperature range
    Parameter Name
    Value
    Regulator Type
    Step Down (Buck)
    # of Outputs
    1
    Input Voltage Range Min (V)
    2.7
    Input Voltage Range Max (V)
    5.5
    Output Voltage Range Min (V)
    0.7
    Output Current (A) max
    5000
    Quiescent Current (mA) typ
    0.8
    Switching Frequency (kHz)
    3300
    Synchronous Rectifier
    Yes
    Operating Temp Range
    -40 to 125
    Vfb (V)
    0.625
    SHUTDOWN Current (µA) (Typ)
    0.01
    Documentation
    Data Sheets
    11/05/2015
    1134KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC4950YFL-TR
    10
    VDFN
    -40C to +125C
    T/R
    1.43
    1.19
    1.08
    1.05
    1.03
    MIC4950YFM-TR
    8
    SOIC
    -40C to +125C
    T/R
    1.43
    1.19
    1.08
    1.05
    1.03

    ** Device not available to purchase online. Please contact a sales office for pricing information.
    Open a microchipDIRECT account today!

    Development Tools
    • Demo & Eval Boards
    • MIC4950YFL Evaluation Board ( MIC4950YFL-EV )

      MIC4950YFL

      This board enables the evaluation of the MIC4950, a fully integrated 5A switching regulator featuring HyperSpeed™ control and Power Good output indication. The MIC4950 is highly efficient throughout the entire output current range, exceeding 95% at5V input to 3.3V output. The MIC4950 provides accurate output voltage regulation under the most demanding conditions and responds extremely fast to a...

    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    MIC4950YFM-T5
    0.852457
    8
    SOIC
    3.9mm
    Matte Tin
    e3
    MIC4950YFM-TR
    0.852457
    8
    SOIC
    3.9mm
    Matte Tin
    e3
    MIC49500-1.2WR
    0.541800
    0.666667
    7
    SPAK
    -
    Matte Tin
    e3
    MIC49500-0.9WR-TR
    0.541800
    1.440000
    7
    SPAK
    -
    Matte Tin
    e3
    MIC49500-0.9WR
    0.541800
    0.666667
    7
    SPAK
    -
    Matte Tin
    e3
    MIC49500WR
    0.541800
    0.666667
    7
    SPAK
    -
    Matte Tin
    e3
    MIC49500-1.2WR-TR
    0.541800
    1.440000
    7
    SPAK
    -
    Matte Tin
    e3
    MIC49500WR-TR
    0.541800
    1.440000
    7
    SPAK
    -
    Matte Tin
    e3
    MIC4950YFL-TR
    0.000000
    10
    VDFN
    3x4x0.9mm
    Matte Tin
    e3
    MIC4950YFL-T5
    0.000000
    10
    VDFN
    3x4x0.9mm
    Matte Tin
    e3
    To see a complete listing of RoHS data for this device, please Click here
    Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.