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Datasheet Microchip MIC23451-AAAYFL-T5

Part NumberMIC23451-AAAYFL-T5

The MIC23451 is a high-efficiency, 3MHz, triple 2A, synchronous buck regulator with HyperLight Load® mode


  • Download » Datasheet PDF, 3.3 Mb, Revision: 11-09-2015
    MIC23451 - 3MHz, 2A Triple Synch Buck Regulator w/ HyperLight Load® & Power Good
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    3MHz, 2A Triple Synchronous
    Buck Regulator with
    HyperLight Load® and Power Good General Description Features The MIC23451 is a high-efficiency, 3MHz, triple 2A,
    synchronous buck regulator with HyperLight Load mode.
    HyperLight Load provides very-high efficiency at light
    loads and ultra-fast transient response, which is ideal 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 4mm x 4mm QFN package
    saves board space and requires only five external
    components for each channel. The MIC23451 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 that is less than
    1mm height.
    The MIC23451 has a very-low quiescent current of 24µA
    each channel and achieves as high as 81% efficiency at
    1mA. At higher loads, the MIC23451 provides a constant
    switching frequency around 3MHz while achieving peak
    efficiencies up to 93%.
    The MIC23451 is available in a 26-pin 4mm x 4mm QFN ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




# of Outputs3
Automotive RatedNo
Duty Cycle Max0.9 %
Input Voltage Range2.7 - 5.5 V
Light Load Efficiency ModeYes
Operating Temperature Range-40 to +125 °C
Output Current3000 mA) Max
Output Voltage Range0.62 - 3.3 V
Quiescent Current65 mA) type
Regulator TypeMulti-Output
SHUTDOWN Current0.01 µA
Switching Frequency3000 kHz
Synchronous RectifierYes
Vfb0.62 V

Eco Plan


Moldel Line

Series: MIC23451 (2)

Manufacturer's Classification

  • Power Management > Switching Regulators > Multi Output Regulators

Other Names:


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