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Datasheet Microchip MIC261203-ZAYJL-TR

Part NumberMIC261203-ZAYJL-TR

The MIC261203-ZA is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture


  • Download » Datasheet PDF, 1.4 Mb, Revision: 11-05-2015
    MIC261203-ZA-28V, 12A, Hyper Speed Control? Synchronous DC-to-DC Buck Regulator
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    28V, 12A, Hyper Speed Controlв„ў
    Synchronous DC-to-DC Buck Regulator
    SuperSwitcherв„ў II General Description
    The Micrel MIC261203-ZA is a constant-frequency,
    synchronous buck regulator featuring a unique adaptive
    on-time control architecture. The MIC261203-ZA 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 0.6V 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
    ultra-fast 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 MIC261203-ZA offers a full suite of 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” short-circuit ...



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




# of Outputs1
Automotive RatedNo
Duty Cycle Max0.82 %
Input Voltage Range4.5 - 28 V
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +125 °C
Output Current12000 mA) Max
Output Voltage Range0.6 - 5.5 V
Quiescent Current0.73 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current5 µA
Switching Frequency600 kHz
Synchronous RectifierYes
Vfb0.6 V

Moldel Line

Series: MIC261203Z (1)
  • MIC261203-ZAYJL-TR

Manufacturer's Classification

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

Other Names:


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