Micrel – MIC28304, MIC94045, MIC23451 and MIC94310: Offering High Power Efficiency, Fast Transient Responses and EMI Performance

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Micrel is Behind Each Power Step

Offering High Power Efficiency, Fast Transient Responses and EMI Performance

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Part NumberDescriptionFunctionFeatureBenefit
MIC28304DC/DC buck micro power moduleConverts high input voltage to logic level voltage 4.5V to 70V input range enhances EMI performanceCan be placed very close to active devices due to EMI performance. No need for transient suppressors up to 76V
MIC94045Power load switchCan turn on power load easily with low power loss28mΩ RDS(ON), 3A continuous operating powerAllows the micro to power up any power block after all control loops are active
MIC23451Triple buckSteps down input voltage to three programmable logic level voltages, up to 2A each Three independent 2A outputs with three power good (PG) indicators The fast transient response minimizes the dip, which eliminates the need to add large cap to store energy during power up/power down
MIC94310Ripple BlockerActive filter provides high frequency ripple attenuationActive noise rejection over wide frequency range band >50dB 10Hz to 10MHz at 200mADesigner can use Ripple Blocker with any low cost DC/DC regulator and attenuate any ripple

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