Microchip Technology Inc

MIC2183

In Production

Micrel's MIC2183 is a high efficiency PWM synchronous buck control IC. With its wide input voltage range of 2.9V to 14V, the MIC2183 can be used to efficiently step voltages down in 1- or 2-cell Li-Ion battery powered applications, as well as in fixed 3.3V, 5V, or 12V systems.

Efficiencies over 90% are achievable over a wide range of load conditions with the MIC2183's PWM control scheme. The operating frequency can be divided by two by raising the FREQ/2 pin to VDD. This allows the user to optimize efficiency versus board space. It also allows the MIC2183 to be externally synchronized to frequencies below its nominal 400KHz.

The MIC2183 features an oscillator output, FreqOut, which can be used to implement a simple charge pump in low voltage applications. The output of the charge pump can be fed into the gate drive power circuitry via the VINP pin. This feature allows enhanced gate drive, hence higher efficiencies at low input voltages.

MIC2183 also features a 1µA shutdown mode, and a programmable undervoltage lockout, making it well-suited for portable applications.

The MIC2183 is available in a 16-pin SOP (small-outline package) with a junction temperature range from -40°C to +125°C.

 

    Features

        • Input voltage range: 2.9V to 14V
        • >90% efficiency
        • Oscillator frequency of 400kHz
        • Frequency divide-by-two pin
        • Frequency sync to 600kHz
        • FreqOut oscillator output allows simple charge pump implementation in low voltage systems
        • Front edge blanking
        • 5ω output drivers (typical)
        • Soft start
        • PWM current mode control
        • 1µA shutdown current
        • Cycle-by-cycle current limiting
        • Frequency foldback short circuit protection
        • Adjustable under-voltage lockout
        • 16-pin narrow-body SOP and QSOP package options
    Parameter Name
    Value
    Supported Topologies
    Sync. Buck
    Supported Outputs
    1
    Minimum Input Voltage (V)
    2.9
    Maximum Input Voltage (V)
    14
    Minimum Output Voltage (V)
    1.3
    Maximum Output Voltage (V)
    12
    Typical Tolerance (%)
    ±1
    Duty Cycle Max (%)
    1
    Operating Frequency (Hz)
    200K / 400K
    External Clock Sync
    True
    Soft Start
    True
    Internal Voltage Bias
    True
    Enable Pin
    True
    Current Limit / Short Circuit Protection
    True
    Operating Supply Current (mA)
    1.7
    Iq Off (µA)
    0.5
    Package
    16/SOP, 16/QSOP
    Documentation
    Data Sheets
    11/05/2015
    146KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC2183YM
    16
    SOIC
    -40C to +125C
    TUBE
    3.32
    2.77
    2.52
    2.43
    2.40
    MIC2183YM-TR
    16
    SOIC
    -40C to +125C
    T/R
    3.32
    2.77
    2.52
    2.43
    2.40
    MIC2183YQS
    16
    QSOP
    -40C to +125C
    TUBE
    3.32
    2.77
    2.52
    2.43
    2.40
    MIC2183YQS-TR
    16
    QSOP
    -40C to +125C
    T/R
    3.32
    2.77
    2.52
    2.43
    2.40

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

    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    MIC2183YM
    0.157400
    0.300000
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2183YM-TR
    0.157400
    0.307692
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2183YQS
    0.083600
    0.160000
    16
    QSOP
    3.90mm(.150in)
    Matte Tin
    e3
    MIC2183YQS-TR
    0.083600
    0.320000
    16
    QSOP
    3.90mm(.150in)
    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.