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Datasheet Microchip MIC4681YM-TR

Part NumberMIC4681YM-TR

The MIC4681 SuperSwitcher™ is an easy-to-use step-down (buck) voltage-mode switching regulator


  • Download » Datasheet PDF, 251 Kb, Revision: 11-05-2015
    MIC4681 Data Sheet
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    MIC4681 Micrel MIC4681
    2A-Peak SuperSwitcherв„ў SOP-8 Buck Regulator General Description Features The MIC4681 SuperSwitcherв„ў is an easy-to-use step-down
    (buck) voltage-mode switching regulator. The 200kHz
    MIC4681 achieves over 1A of continuous output current over
    a 4V to 30V input range in an 8-lead SOPpackage . The
    MIC4681 features a high 2.1A minimum current limit, making
    the device ideal for pulsed current applications such as GSM
    and TDMA cell phone battery chargers and power supplies.
    The MIC4681 sustains an output of 4.2V/2A within a typical
    GSM charging environment.
    The MIC4681 has an input voltage range of 4V to 30V, with
    excellent line, load, and transient response. The regulator
    performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. In shutdown
    mode, the regulator draws less than 6ВµA of standby current.
    The MIC4681 SuperSwitcherв„ў regulator requires a minimum number of external components and can operate using
    a standard series of inductors and capacitors. Frequency
    compensation is provided internally for fast transient response and ease of use.
    The MIC4681 is available in the 8-lead SOP with a
    –40°C to +125°C junction temperature range. SO-8 package with over 1A continuous output current
    Capable of 2A pulse charging for GSM applications
    All surface mount solution
    Only 4 external components required
    Fixed 200kHz operation ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max0.95 %
Input Voltage Range4 - 30 V
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +125 °C
Output Current2000 mA) Max
Output Voltage Range1.25 V
Quiescent Current7 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current50 µA
Switching Frequency400 kHz
Synchronous RectifierNo
Vfb1.25 V

Eco Plan


Moldel Line

Series: MIC4681 (2)

Manufacturer's Classification

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

Other Names:


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