Microchip Technology Inc

MIC23159

In Production

The MIC23158/9 is a high efficiency 3MHz dual 2A synchronous buck regulator with HyperLight Load® mode, Power Good output indicator, and programmable soft start. The MIC23159 also provides an auto discharge feature that switches in a 225Ω pull down circuit on its output to discharge the output capacitor when disabled. HyperLight Load® provides very high efficiency at light loads and ultra fast transient response which makes the MIC23158/9 perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The 20-pin 3mm x 4mm MLF® package saves precious board space and requires seven external components for each channel.

The MIC23158/9 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm in height.

The MIC23158/9 has a very low quiescent current of 45µA and achieves a peak efficiency of 94% in continuous conduction mode. In discontinuous conduction mode, the MIC23158/9 can achieve 83% efficiency at 1mA.

The MIC23158/9 is available in a 20-pin 3mm x 4mm MLF® package with an operating junction temperature range from -40°C to +125°C.

 

    Features

        • Input voltage: 2.7V to 5.5V
        • Output voltage: Adjustable (down to 1.0V)
        • Two independent 2A outputs
        • Up to 94% peak efficiency
        • 83% typical efficiency at 1mA
        • Two independent Power Good Indicators
        • Independent programmable Soft Start
        • 45µA typical quiescent current
        • 3MHz PWM operation in continuous conduction mode
        • Ultra-fast transient response
        • Fully integrated MOSFET switches
        • Output pre-bias safe
        • 0.01µA shutdown current
        • Thermal shutdown and current limit protection
        • 20-pin 3mm x 4mm MLF® package
        • Junction temperature range of -40°C to +125°C
    Parameter Name
    Value
    Regulator Type
    Step Down (Buck)
    # of Outputs
    2
    Input Voltage Range Min (V)
    2.7
    Input Voltage Range Max (V)
    5.5
    Output Voltage Range Min (V)
    0.62
    Output Voltage Range Max (V)
    3.3
    Output Current (A) max
    1500
    Quiescent Current (mA) typ
    45
    Switching Frequency (kHz)
    3000
    Synchronous Rectifier
    Yes
    Operating Temp Range
    -40 to 125
    Vfb (V)
    0.62
    Duty Cycle Max (%)
    0.9
    SHUTDOWN Current (µA) (Typ)
    0.1
    Light Load Efficiency Mode
    Yes
    Documentation
    Data Sheets
    11/05/2015
    943KB
    Pricing & Samples
    All pricing shown in USD only.
    Part Number
    Leads
    Package Type
    Temp Range
    Packing
    1+
    26+
    100+
    1000+
    5000+
    Buy
    Sample
    MIC23159YML-TR
    20
    VQFN
    -40C to +125C
    T/R
    1.32
    1.10
    1.00
    0.97
    0.96

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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
    MIC23159YML-T5
    0.031400
    0.664302
    20
    VQFN
    4x3x0.9mm
    NiPdAu
    e4
    MIC23159YML-TR
    0.031400
    0.664302
    20
    VQFN
    4x3x0.9mm
    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.