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Datasheet Microchip MIC4685


The MIC4685 is a high-efficiency 200kHz stepdown (buck) switching regulator


  • Download » Datasheet PDF, 339 Kb, Revision: 11-05-2015
    MIC4685 Data Sheet
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    3A SPAK SuperSwitcherв„ў
    Buck Regulator General Description Features The MIC4685 is a high-efficiency 200kHz stepdown (buck)
    switching regulator. Power conversion efficiency of above
    85% is easily obtainable for a wide variety of applications.
    The MIC4685 achieves 3A of continuous current in the
    7-pin SPAK package.
    The thermal performance of the SPAK allows it to replace
    TO-220s and TO-263s (D2PAKs) in many applications.
    The SPAK saves board space with a 36% smaller footprint
    than TO-263.
    High-efficiency is maintained over a wide output current
    range by utilizing a boost capacitor to increase the voltage
    available to saturate the internal power switch. As a result
    of this high-efficiency, only the ground plane of the PCB is
    needed for a heat sink.
    The MIC4685 allows for a high degree of safety. It has a
    wide input voltage range of 4V to 30V (34V transient),
    allowing it to be used in applications where input voltage
    transients may be present. Built-in safety features include
    over-current protection, frequency-foldback short-circuit
    protection, and thermal shutdown.
    The MIC4685 is available in a 7-pin SPAK package with a ...



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, %0.940.94
Input Voltage Range, V4 - 304 - 30
Light Load Efficiency ModeNoNo
Operating Temperature Range, °C-40 to +125-40 to +125
Output Current, mA) Max30003000
Output Voltage Range, V1.241.24
Quiescent Current, mA) type66
Regulator TypeStep Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA55
Switching Frequency, kHz200200
Synchronous RectifierNoNo
Vfb, V1.241.24

Eco Plan


Moldel Line

Series: MIC4685 (2)

Manufacturer's Classification

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

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