Microchip Technology Inc

MIC2224

In Production

The MIC2224 is a high efficiency 2MHz PWM synchronous buck switching regulator optimized for powering 2.5G and 3G CDMA RF Power Amplifiers. The output voltage of MIC2224 can be dynamically adjusted with an external DAC to maximize PA efficiency versus required output power. When the PA requires the highest power, the DAC can be used to enable a low on-resistance, 40mΩ, bypass switch that powers the PA directly from the battery.

The 2MHz PWM operation of MIC2224 allows the smallest possible components. It also allows the device to easily meet stringent W-CDMA VOUT response specifications. 

The MIC2224 operates from a 2.7V to 5.5V input, making it ideal for single cell Li-Ion applications. The device features built-in power MOSFETs that can supply up to 600mA of output current in PWM mode, or over 1A in bypass mode. The MIC2224 can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC2224 has a junction temperature range of –40°C to +125°C and is available in a 3mm x 3mm MLFTM-10L package.

 

    Features

        • 2.7V to 5.5V input voltage range
        • DAC-adjustable output voltage down to 0.3V
        • 600mA output current in PWM mode
        • Internally protected 40mΩ bypass switch
        • Allows direct connection of battery to load
        • Over 95% efficient
        • Fully integrated MOSFET switches
        • Constant 2MHz PWM operation
        • Internal soft-start
        • 1% line and load regulation
        • <1µA shutdown current
        • Under-voltage lockout
        • Thermal shutdown and current limit protection
        • –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 Max (V)
    5.5
    Output Current (A) max
    2000
    Quiescent Current (mA) typ
    0.36
    Switching Frequency (kHz)
    2000
    Synchronous Rectifier
    Yes
    Operating Temp Range
    -40 to 125
    Duty Cycle Max (%)
    1
    SHUTDOWN Current (µA) (Typ)
    1
    Documentation
    Data Sheets
    11/05/2015
    383KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC2224YML-TR
    10
    VDFN
    -40C to +125C
    T/R
    2.67
    2.23
    2.02
    1.95
    1.93

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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
    MIC2224YML-TR
    0.022700
    0.643702
    10
    VDFN
    3x3x0.9mm
    NiPdAu
    e4
    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.