Electronics ru
Advanced Search +

Datasheet Microchip MIC4681


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
    Docket ↓
    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)Production (Appropriate for new designs but newer alternatives may exist)




# of Outputs11
Automotive RatedNoNo
Duty Cycle Max, %0.950.95
Input Voltage Range, V4 - 304 - 30
Light Load Efficiency ModeNoNo
Operating Temperature Range, °C-40 to +125-40 to +125
Output Current, mA) Max20002000
Output Voltage Range, V1.251.25
Quiescent Current, mA) type77
Regulator TypeStep Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA5050
Switching Frequency, kHz400400
Synchronous RectifierNoNo
Vfb, V1.251.25

Eco Plan


Moldel Line

Series: MIC4681 (2)

Manufacturer's Classification

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

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus