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Datasheet Microchip MIC4575-3.3WT

Part NumberMIC4575-3.3WT

The MIC4575 is a series of easy to use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators


  • Download » Datasheet, PDF, 538 Kb, Revision: 11-05-2015
    MIC4575 Data Sheet
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    200kHz Simple 1A Buck Regulator General Description Features The MIC4575 is a series of easy to use fixed and
    adjustable BiCMOS step-down (buck) switch-mode voltage
    regulators. The 200kHz MIC4575 duplicates the pinout
    and function of the 52kHz LM2575. The higher switching
    frequency may allow up to a 2:1 reduction in output filter
    inductor size.
    The MIC4575 is available in 3.3V, and 5V fixed output
    versions or a 1.23V to 20V adjustable output version. Both
    versions are capable of driving a 1A load with excellent
    line and load regulation.
    The feedback voltage is guaranteed to В±2% tolerance for
    adjustable versions, and the output voltage is guaranteed
    to В±3% for fixed versions, within specified voltages and
    load conditions. The oscillator frequency is guaranteed to
    In shutdown mode, the regulator draws less than 200ВµA
    standby current. The regulator performs cycle-by-cycle
    current limiting and thermal shutdown for protection under
    fault conditions.
    This series of simple switch-mode regulators requires a
    minimum number of external components and can operate
    using a standard series of inductors. Frequency compensation is provided internally. ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max0.95 %
Input Voltage Range4 - 24 V
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +85 °C
Output Current1000 mA) Max
Output Voltage Range1.23 V
Quiescent Current5 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current50 µA
Switching Frequency200 kHz
Synchronous RectifierNo
Vfb1.23 V

Eco Plan


Moldel Line

Series: MIC4575 (9)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 36V

Other Names:

MIC45753.3WT, MIC4575 3.3WT

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