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Datasheet Microchip MIC3172

ManufacturerMicrochip
SeriesMIC3172

The MIC2172 and MIC3172 are complete 100kHz SMPS current-mode controllers with internal 65V 1

Datasheets

  • Download » Datasheet, PDF, 929 Kb, Revision: 11-05-2015
    MIC2172/3172 - 100kHz 1.25A Switching Regulators
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    MIC2172/3172
    100kHz 1.25A Switching Regulators General Description Features The MIC2172 and MIC3172 are complete 100kHz SMPS
    current-mode controllers with internal 65V 1.25A power
    switches. The MIC2172 features external frequency
    synchronization or frequency adjustment, while the
    MIC3172 features an enable/shutdown control input.
    Although primarily intended for voltage step-up
    applications, the floating switch architecture of the
    MIC2172/3172 makes it practical for step-down, inverting,
    and Cuk configurations as well as isolated topologies.
    Operating from 3V to 40V, the MIC2172/3172 draws only
    7mA of quiescent current making it attractive for battery
    operated supplies.
    The MIC3172 is for applications that require on/off control
    of the regulator. The MIC3172 is externally shutdown by
    applying a TTL low signal to EN (enable). When disabled,
    the MIC3172 draws only leakage current (typically less
    than 1ВµA). EN must be high for normal operation. For
    applications not requiring control, EN must be tied to VIN or
    TTL high.
    The MIC2172 is for applications requiring two or more
    SMPS regulators that operate from the same input supply.
    The MIC2172 features a SYNC input which allows locking ...

Prices

Status

MIC3172YMMIC3172YM-TRMIC3172YN
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

MIC3172YMMIC3172YM-TRMIC3172YN
PackageSOICSOICPDIP
Pins888

Parametrics

MIC3172YMMIC3172YM-TRMIC3172YN
Alternative TopologySEPIC, CUK, FlybackSEPIC, CUK, FlybackSEPIC, CUK, Flyback
Automotive QualNoNoNo
Duty Cycle Max, %959595
Input Voltage Range Max, V404040
Input Voltage Range Min(V)333
Light Load Efficiency ModeNoNoNo
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85
Output Voltage Range Max, V656565
Output Voltage Range Min, V3.63.63.6
Quiescent Current, mA) typ777
SHUTDOWN Current, µA0.10.10.1
Switch current, A) typ1.251.251.25
Switching Frequency, kHz100100100
Synchronous RectifierNoNoNo
Vfb, V1.241.241.24

Eco Plan

MIC3172YMMIC3172YM-TRMIC3172YN
RoHSCompliantCompliantCompliant

Other Options

MIC2172

Moldel Line

Series: MIC3172 (3)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Up (Boost) - Non-Synchronous Products

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