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Datasheet Microchip MIC22405


The MIC22405 is a high efficiency, 4A integrated switch synchronous buck (step-down) regulator


  • Download » Datasheet, PDF, 1.8 Mb, Revision: 11-05-2015
    MIC22405 - 4A Integrated Switch High-Eff Synch Buck Regulator with Freq Prog
    Docket ↓
    4A Integrated Switch High-Efficiency
    Synchronous Buck Regulator with
    Frequency Programmable upto 4MHz General Description Features The Micrel MIC22405 is a high efficiency, 4A integrated
    switch synchronous buck (step-down) regulator. The
    MIC22405 is optimized for highest efficiency, achieving
    more than 95% efficiency while still switching at 1MHz.
    The ultra-high speed control loop keeps the output voltage
    within regulation even under the extreme transient load
    swings commonly found in FPGAs and low-voltage ASICs.
    The output voltage is pre-bias safe and can be adjusted
    down to 0.7V to address all low-voltage power needs.
    The MIC22405 offers a full range of sequencing and
    tracking options. The Enable/Delay (EN/DLY) pin,
    combined with the Power Good (PG) pin, allows multiple
    outputs to be sequenced in any way during turn-on and
    turn-off. The Ramp Control™ (RC) pin allows the device to
    be connected to another product in the MIC22xxx and/or
    MIC68xxx family, to keep the output voltages within a
    certain ∆V on start-up.
    The MIC22405 is available in a 20-pin 3mm x 4mm MLF
    with a junction operating range from –40°C to +125°C. ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max, %1
Input Voltage Range, V2.9 - 5.5
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max4000
Output Voltage Range, V0.7 - 5.5
Quiescent Current, mA) type1.3
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA5
Synchronous RectifierYes
Vfb, V0.7

Eco Plan


Moldel Line

Series: MIC22405 (1)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 6V

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