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Datasheet Microchip MIC26903

ManufacturerMicrochip
SeriesMIC26903

The MIC26903 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive on-time control architecture

Datasheets

  • Download » Datasheet PDF, 1.4 Mb, Revision: 11-05-2015
    MIC26903-ZA - 28V, 9A Hyper Speed Control? Synchronous DC-to-DC Buck Regulator
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    MIC26903-ZA
    28V, 9A Hyper Speed Control
    Synchronous DC-to-DC Buck Regulator
    SuperSwitcher™ II General Description
    The Micrel MIC26903-ZA is a constant-frequency,
    synchronous buck regulator featuring a unique adaptive
    on-time control architecture. The MIC26903-ZA operates
    over an input supply range of 4.5V to 28V and provides a
    regulated output of up to 9A of output current. The output
    voltage is adjustable down to 0.6V with a guaranteed
    accuracy of ±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 MIC26903-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 ...
  • Download » Datasheet PDF, 869 Kb, Revision: 11-05-2015
    MIC26903 - 28V, 9A Hyper Light Load? Synchronous DC/DC Buck Regulator
    Docket ↓
    MIC26903
    28V, 9A Hyper Light Load™
    Synchronous DC/DC Buck Regulator
    SuperSwitcher IIG™ General Description Features The Micrel MIC26903 is a constant-frequency,
    synchronous DC/DC buck regulator featuring adaptive ontime control architecture. The MIC26903 operates over a
    supply range of 4.5V to 28V. It has an internal linear
    regulator which provides a regulated 5V to power the
    internal control circuitry. MIC26903 operates at a constant
    600kHz switching frequency in continuous conduction
    mode and can be used to provide up to 9A of output
    current. The output voltage is adjustable down to 0.8V. Micrel’s Hyper Light Load™ architecture provides the same
    high-efficiency and ultra-fast transient response as the
    Hyper Speed Control™ architecture under medium to heavy
    loads, but also maintains high efficiency under light load
    conditions by transitioning to variable frequency,
    discontinuous mode operation.
    The MIC26903 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, thermal shutdown, internal
    soft-start to reduce the inrush current, foldback current
    limit and “hiccup mode” short-circuit protection. The
    MIC26903 includes a Power Good (PG) output to allow ...

Prices

Status

MIC26903YJL-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)

Packaging

MIC26903YJL-TR
PackageVQFN
Pins28

Parametrics

MIC26903YJL-TR
# of Outputs1
Automotive RatedNo
Duty Cycle Max, %0.82
Input Voltage Range, V4.5 - 28
Light Load Efficiency ModeYes
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max9000
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

MIC26903YJL-TR
RoHSCompliant

Other Options

MIC26903Z

Moldel Line

Series: MIC26903 (1)

Manufacturer's Classification

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

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