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Datasheet Microchip MIC23451


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 LoadВ® & Power Good
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    3MHz, 2A Triple Synchronous
    Buck Regulator with
    HyperLight LoadВ® 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 0.47ВµH, and an output capacitor as small
    as 2.2ВµF that enables a total solution size that is less than
    1mm height.
    The MIC23451 has a very-low quiescent current of 24ВµA
    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)Production (Appropriate for new designs but newer alternatives may exist)



# of Outputs33
Automotive RatedNoNo
Duty Cycle Max, %0.90.9
Input Voltage Range, V2.7 - 5.52.7 - 5.5
Light Load Efficiency ModeYesYes
Operating Temperature Range, °C-40 to +125-40 to +125
Output Current, mA) Max30003000
Output Voltage Range, V0.62 - 3.30.62 - 3.3
Quiescent Current, mA) type6565
Regulator TypeMulti-OutputMulti-Output
SHUTDOWN Current, µA0.010.01
Switching Frequency, kHz30003000
Synchronous RectifierYesYes
Vfb, V0.620.62

Eco Plan

Moldel Line

Series: MIC23451 (2)

Manufacturer's Classification

  • Power Management > Switching Regulators > Multi Output Regulators

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