Microchip Technology Inc

MIC2182

In Production

Micrel's MIC2182 is a synchronous buck (step-down) switching regulator controller. An all N-Channel synchronous architecture and powerful output drivers allow up to a 20A output current capabilty. The PWM and skip-mode control scheme allows efficiency to exceed 95% over a wide range of load current, making it ideal for battery powered applications, as well as high current distributed power supplies.

The MIC2182 operates from a 4.5V to 32V input and can operate with a maximum duty cycle of 86% for use in low-dropout conditions. It also features a shutdown mode that reduces quiescent current to 0.1µA.

The MIC2182 achieves high efficiency over a wide output current range by automatically switching between PWM and skip mode. Skip-mode operation enables the converter to maintain high efficiency at light loads by turning off circuitry pertaining to PWM operation, reducing the no-load supply current from 1.6mA to 600µA. The operating mode is internally selected according to the output load conditions. Skip mode can be defeated by pulling the PWM pin low which reduces noise and RF interference.

The MIC2182 is available in a 16-pin SOP (small-outline package) and SSOP (shrink small-outline package) with an operating range from -40°C to +85°C.

 

    Features

        • 4.5V to 32V Input voltage range
        • 1.25V to 6V Output voltage range
        • 95% efficiency
        • 300kHz oscillator frequency
        • Current sense blanking
        • 5ω impedance MOSFET Drivers
        • Drives N-Channel MOSFETs
        • 600µA typical quiescent current (skip-mode)
        • Logic controlled micropower shutdown (IQ <0.1µA)
        • Current-mode control
        • Cycle-by-cycle current limiting
        • Built-in undervoltage protection
        • Adjustable undervoltage lockout
        • Easily synchronizable
        • Precision 1.245V reference output
        • 0.6% total regulation
        • 16-pin SOP and SSOP packages
        • Frequency foldback overcurrent protection
        • Sustained short-circuit protection at any input voltage
        • 20A output current capability
    Parameter Name
    Value
    Supported Topologies
    Sync. Buck
    Supported Outputs
    1
    Minimum Input Voltage (V)
    4.5
    Maximum Input Voltage (V)
    32
    Minimum Output Voltage (V)
    1.25
    Maximum Output Voltage (V)
    6
    PFM, Discontinuous, Hyperlight load, or Skip Mode
    True
    Typical Tolerance (%)
    ±1
    Duty Cycle Max (%)
    0.86
    Operating Frequency (Hz)
    300K
    External Clock Sync
    True
    Soft Start
    True
    Internal Voltage Bias
    True
    Enable Pin
    True
    Current Limit / Short Circuit Protection
    True
    Input UVLO Typ (V)
    2.5
    Operating Supply Current (mA)
    1.6
    Iq Off (µA)
    0.1
    Package
    16/SOP. 16/SSOP
    Documentation
    Data Sheets
    11/05/2015
    223KB
      Application Notes
     
     
     
     
    AppNote
    10/01/2015
    240KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC2182-3.3YM
    16
    SOIC
    -40C to +85C
    TUBE
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182-3.3YM-TR
    16
    SOIC
    -40C to +85C
    T/R
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182-3.3YSM
    16
    SSOP
    -40C to +85C
    TUBE
    3.37
    2.81
    2.55
    2.47
    2.44
    MIC2182-3.3YSM-TR
    16
    SSOP
    -40C to +85C
    T/R
    3.37
    2.81
    2.55
    2.47
    2.44
    MIC2182-5.0YM
    16
    SOIC
    -40C to +85C
    TUBE
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182-5.0YM-TR
    16
    SOIC
    -40C to +85C
    T/R
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182-5.0YSM
    16
    SSOP
    -40C to +85C
    TUBE
    3.37
    2.81
    2.55
    2.47
    2.44
    MIC2182-5.0YSM-TR
    16
    SSOP
    -40C to +85C
    T/R
    3.37
    2.81
    2.55
    2.47
    2.44
    MIC2182YM
    16
    SOIC
    -40C to +85C
    TUBE
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182YM-TR
    16
    SOIC
    -40C to +85C
    T/R
    3.23
    2.69
    2.45
    2.36
    2.34
    MIC2182YSM
    16
    SSOP
    -40C to +85C
    TUBE
    3.37
    2.81
    2.55
    2.47
    2.44
    MIC2182YSM-TR
    16
    SSOP
    -40C to +85C
    T/R
    3.37
    2.81
    2.55
    2.47
    2.44

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    RoHS Information
    Part
    Number
    Device
    Weight
    Shipping
    Weight
    Lead
    Count
    Package
    Type
    Package
    Width
    Solder
    Composition
    JEDEC
    Indicator
    RoHS
     
    China
    EFUP
    MIC2182-3.3YM
    0.157400
    0.300000
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182-3.3YM-TR
    0.157400
    0.307692
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182-5.0YM
    0.157400
    0.300000
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182-5.0YM-TR
    0.157400
    0.307692
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182YM
    0.157400
    0.300000
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182YM-TR
    0.157400
    0.307692
    16
    SOIC
    .150in
    Matte Tin
    e3
    MIC2182YSM
    0.139000
    0.273507
    16
    SSOP
    5.3mm
    Matte Tin
    e3
    MIC2182YSM-TR
    0.139000
    0.812368
    16
    SSOP
    5.3mm
    Matte Tin
    e3
    MIC2182-3.3YSM
    0.139000
    0.273507
    16
    SSOP
    5.3mm
    Matte Tin
    e3
    MIC2182-3.3YSM-TR
    0.139000
    0.812368
    16
    SSOP
    5.3mm
    Matte Tin
    e3
    MIC2182-5.0YSM
    0.139000
    0.273507
    16
    SSOP
    5.3mm
    Matte Tin
    e3
    MIC2182-5.0YSM-TR
    0.139000
    0.812368
    16
    SSOP
    5.3mm
    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.