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Datasheet Microchip MIC4744

ManufacturerMicrochip
SeriesMIC4744

The MIC4744 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output

Datasheets

  • Download » Datasheet, PDF, 730 Kb, Revision: 11-05-2015
    MIC4744 Data Sheet
    Docket ↓
    MIC4744
    4 MHz Dual 2A Integrated Switch
    Buck Regulator General Description Features The Micrel MIC4744 is a high efficiency dual PWM buck
    (step-down) regulator that provides dual 2A current output.
    The MIC4744 operates at 4MHz. A proprietary internal
    compensation technique allows a closed loop bandwidth of
    over 200kHz. The low on-resistance internal P-Channel MOSFET of the
    MIC4744 allows efficiencies over 90%, reduces external
    components count and eliminates the need for an
    expensive current sense resistor.
    The MIC4744 operates from 2.9V to 5.5V input and the
    output can be adjusted down to 0.6V. The device can
    operate with a maximum duty cycle of 100% for use in lowdropout conditions.
    The MIC4744 is available in the exposed pad 16-pin
    3mm x 3mm MLF® and ETSSOP-16 packages with
    junction operating temperature ranging from –40°C to
    +125°C.
    All support documentation can be found on Micrel’s web
    site at: www.micrel.com. 2.9 to 5.5V supply voltage
    4MHz PWM mode
    2A Dual output
    Greater than 90% efficiency
    100% maximum duty cycle ...

Prices

Status

MIC4744YML-TRMIC4744YTSEMIC4744YTSE-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

MIC4744YML-TRMIC4744YTSEMIC4744YTSE-TR
PackageVQFNTSSOPTSSOP
Pins161616

Parametrics

MIC4744YML-TRMIC4744YTSEMIC4744YTSE-TR
# of Outputs222
Automotive RatedNoNoNo
Duty Cycle Max, %111
Input Voltage Range, V2.9 - 5.52.9 - 5.52.9 - 5.5
Light Load Efficiency ModeNoNoNo
Operating Temperature Range, °C-40 to +125-40 to +125-40 to +125
Output Current, mA) Max300030003000
Output Voltage Range, V0.6 - 5.50.6 - 5.50.6 - 5.5
Regulator TypeStep Down (Buck)Step Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA1.61.61.6
Switching Frequency, kHz400040004000
Synchronous RectifierNoNoNo
Vfb, V0.60.60.6

Eco Plan

MIC4744YML-TRMIC4744YTSEMIC4744YTSE-TR
RoHSCompliantCompliantCompliant

Moldel Line

Series: MIC4744 (3)

Manufacturer's Classification

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

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