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Datasheet Microchip MIC2285

ManufacturerMicrochip
SeriesMIC2285

The MIC2285 is a high efficiency 8MHz pulse width modulated (PWM) synchronous buck (stepdown) regulator that features a LowQ® LDO standby mode that draws only 18µA of quiescent current

Datasheets

  • Download » Datasheet PDF, 573 Kb, Revision: 11-05-2015
    MIC2285 - 8MHz PWM Synchronous Buck Regulator with LDO Standby Mode
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    MIC2285
    8MHz PWM Synchronous Buck
    Regulator with LDO Standby Mode General Description Features The Micrel MIC2285 is a high efficiency 8MHz pulse
    width modulated (PWM) synchronous buck (stepdown) regulator that features a LOWQ™ LDO standby
    mode that draws only 18µA of quiescent current. The
    MIC2285 allows an ultra-low noise, small size, and
    high efficiency solution for portable power applications. 2.7 to 5.5V supply/input voltage Light load LOWQ™ LDO mode
    20µA quiescent current
    Low noise, 75µVrms 8MHz PWM mode
    Output current to 500mA
    >90% efficiency
    100% maximum duty cycle Adjustable output voltage option down to 1V
    Fixed output voltage options available Ultra-fast transient response Uses a tiny 0.47µH inductor Enables sub 1mm profile solution Fully integrated MOSFET switches Micropower shutdown Thermal shutdown and current limit protection Pb-free 10-pin 3mm x 3mm MLF package –40°C to +125°C junction temperature range In PWM mode, the MIC2285 operates with a constant
    frequency 8MHz PWM control. Under light load
    conditions, such as in system sleep or standby modes,
    the PWM switching operation can be disabled to
    reduce switching losses. In this light load LOWQ™
    mode, the LDO maintains the output voltage and
    draws only 18µA of quiescent current. The LDO mode
    of operation saves battery life while not introducing
    spurious noise and high ripple as experienced with
    pulse skipping or bursting mode regulators.
    The MIC2285 operates from a 2.7V to 5.5V input ...

Prices

Status

MIC2285YML-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)

Packaging

MIC2285YML-TR
PackageVDFN
Pins10

Parametrics

MIC2285YML-TR
# of Outputs1
Automotive RatedNo
Duty Cycle Max, %1
Input Voltage Range, V2.7 - 5.5
Light Load Efficiency ModeNo
Operating Temperature Range, °C-40 to +125
Output Current, mA) Max500
Output Voltage Range, V1 - 5.5
Quiescent Current, mA) type0.79
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA0.01
Switching Frequency, kHz8000
Synchronous RectifierYes
Vfb, V1

Eco Plan

MIC2285YML-TR
RoHSCompliant

Moldel Line

Series: MIC2285 (1)

Manufacturer's Classification

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

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