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Datasheet Microchip MIC4684


The MIC4684 is a high-efficiency 200kHz stepdown (buck) switching regulator


  • Download » Datasheet PDF, 495 Kb, Revision: 11-05-2015
    MIC4684 Data Sheet
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    MIC4684 Micrel, Inc. MIC4684
    2A High-Efficiency SuperSwitcherв„ў Buck Regulator General Description Features The MIC4684 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 MIC4684 achieves 2A of continuous current in an 8-lead
    SO (small outline) package at 60В°C ambient temperature.
    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, no external heat sink is required. The MIC4684,
    housed in an SO-8, can replace larger TO-220 and TO-263
    packages in many applications.
    The MIC4684 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 MIC4684 is available in an 8-lead SO package with a
    junction temperature range of –40°C to +125°C. SO-8 package with 2A continuous output current
    Over 85% efficiency
    Fixed 200kHz PWM operation
    Wide 4V to 30V input voltage range ...



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) Max20002000
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: MIC4684 (2)

Manufacturer's Classification

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

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