RadioLocman.com Electronics ru
Advanced Search +
  

Datasheet Microchip MIC2245

ManufacturerMicrochip
SeriesMIC2245

The MIC2245 is a high efficiency 4MHz 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, 572 Kb, Revision: 11-05-2015
    MIC2245 - 4MHz PWM Synchronous Buck Regulator with LDO Standby Mode
    Docket ↓
    MIC2245
    4MHz PWM Synchronous Buck
    Regulator with LDO Standby Mode General Description Features The Micrel MIC2245 is a high efficiency 4MHz pulse
    width modulated (PWM) synchronous buck (stepdown) regulator that features a LOWQв„ў LDO
    standby mode that draws only 18ВµA of quiescent
    current. The MIC2245 allows an ultra-low noise,
    small size, and high efficiency solution for portable
    power applications.
    In PWM mode, the MIC2245 operates with a
    constant frequency 4MHz 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 LOWQв„ў mode, the LDO maintains the output
    voltage and draws only 18ВµA 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 MIC2245 operates from a 2.7V to 5.5V input
    voltage and features internal power MOSFETs that
    can supply up to 500mA output current in PWM
    mode. It can operate with a maximum duty cycle of ...

Prices

Status

MIC2245YML-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)

Packaging

MIC2245YML-TR
PackageVDFN
Pins10

Parametrics

MIC2245YML-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) type0.71
Regulator TypeStep Down (Buck)
SHUTDOWN Current, µA0.01
Switching Frequency, kHz4000
Synchronous RectifierYes
Vfb, V1

Eco Plan

MIC2245YML-TR
RoHSCompliant

Moldel Line

Series: MIC2245 (1)

Manufacturer's Classification

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

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus