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Datasheet Microchip MIC261201


The MIC261201 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture


  • Download » Datasheet PDF, 1.0 Mb, Revision: 11-05-2015
    MIC261201-28V, 12A Hyper Speed Control? Synchronous DC/DC Buck Regulator
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    28V, 12A Hyper Speed Controlв„ў
    Synchronous DC/DC Buck Regulator
    SuperSwitcher IIв„ў General Description Features The Micrel MIC261201 is a constant-frequency, synchronous
    buck regulator featuring a unique adaptive on-time control
    architecture. The MIC261201 operates over an input supply
    range of 4.5V to 28V and provides a regulated output of up to
    12A of output current. The output voltage is adjustable down
    to 0.8V with a guaranteed accuracy of В±1%, and the device
    operates at a switching frequency of 600kHz. Micrel’s Hyper Speed Control™ architecture allows for ultrafast transient response while reducing the output capacitance
    and also makes (High VIN)/(Low VOUT) operation possible.
    This adaptive tON ripple control architecture combines the
    advantages of fixed-frequency operation and fast transient
    response in a single device.
    The MIC261201 offers a full suite of protection features to
    ensure protection of the IC during fault conditions. These
    include undervoltage lockout to ensure proper operation
    under power-sag conditions, internal soft-start to reduce
    inrush current, foldback current limit, “hiccup mode” shortcircuit protection and thermal shutdown. An open-drain
    Power Good (PG) pin is provided.
    All support documentation can be found on Micrel’s web
    site at: Hyper Speed Controlв„ў architecture enables
    -High Delta V operation (VIN = 28V and VOUT = 0.8V) ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max, %0.82
Input Voltage Range, V4.5 - 28
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max12000
Output Voltage Range, V0.8 - 5.5
Quiescent Current, mA) type0.45
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA5
Switching Frequency, kHz600
Synchronous RectifierYes
Vfb, V0.8

Eco Plan


Moldel Line

Series: MIC261201 (1)

Manufacturer's Classification

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

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