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UC3845

CURRENTMODE PWM CONTROLLER

DESCRIPTION TheUC3842/3/4/5familyofcontrolICsprovidesthenecessaryfeaturestoimplementoff-lineorDCtoDCfixedfrequencycurrentmodecontrolschemeswithaminimalexternalpartscount. ■OPTIMIZEDFOROFF-LINEANDDCTODC CONVERTERS ■LOWSTART-UPCURRENT(

STMICROELECTRONICSSTMicroelectronics

意法半導(dǎo)體意法半導(dǎo)體集團(tuán)

UC3845

SMPS Controller

Description TheUC3842/UC3843/UC3844/UC3845arefixedfrequencycurrent-modePWMcontroller.TheyarespeciallydesignedforOff-LineandDCtoDCconverterapplicationswithminimumexternalcomponents.Theseintegratedcircuitsfeatureatrimmedoscillatorforprecisedutycyclecontrol,atempe

FairchildFairchild Semiconductor

仙童半導(dǎo)體飛兆/仙童半導(dǎo)體公司

UC3845

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

DESCRIPTION TheUTCUC3844/3845arehighperformancefixedfrequencycurrentmodecontrollersthatspecificallydesignedforOff-LineandDCtoDCconverterapplicationswithminimalexternalpartscount.ThedifferencesbetweenUC3844andUC3845arethemaximumdutycyclerangesandunder-volt

UTCUnisonic Technologies

友順友順科技股份有限公司

UC3845

Low Start-Up and Operating Current

Description The3842/43/44/45arefixedfrequencycurrentmodePWMcontroller.TheyarespeciallydesignedforOFF?LineandDCto DCconverterapplicationswithaminimalexternalcomponents.Internallyimplementedcircuitsincludeatrimmedoscillatorforprecise dutycyclecontrol,atemperat

UMWGuangdong Youtai Semiconductor Co., Ltd.

友臺(tái)半導(dǎo)體廣東友臺(tái)半導(dǎo)體有限公司

UC3845

Low Start-Up and Operating Current

Description The3842/43/44/45arefixedfrequencycurrentmodePWMcontroller.TheyarespeciallydesignedforOFF?LineandDCto DCconverterapplicationswithaminimalexternalcomponents.Internallyimplementedcircuitsincludeatrimmedoscillatorforprecise dutycyclecontrol,atemperat

UMWGuangdong Youtai Semiconductor Co., Ltd.

友臺(tái)半導(dǎo)體廣東友臺(tái)半導(dǎo)體有限公司

UC3845

CURRENT MODE PWM CONTROLLER

TITexas Instruments

德州儀器美國德州儀器公司

UC3845

CURRENT MODE PWM CONTROLLER

TITexas Instruments

德州儀器美國德州儀器公司

UC3845

Current-Mode PWM Controllers

TI1Texas Instruments

德州儀器美國德州儀器公司

UC3845

CURRENT MODE PWM CONTROLLER

TITexas Instruments

德州儀器美國德州儀器公司

UC3845

SMPS Controller

FairchildFairchild Semiconductor

仙童半導(dǎo)體飛兆/仙童半導(dǎo)體公司

技術(shù)參數(shù)

  • Duty cycle (Max) (%)：

    50

  • Supply voltage (Max) (V)：

    28

  • UVLO thresholds on/off (V)：

    8.4/7.6

  • Features：

    Adjustable Switching Frequency

  • Operating temperature range (C)：

    0 to 70

  • Rating：

    Catalog

  • Frequency (Max) (kHz)：

    500

  • Gate drive (Typ) (A)：

    1

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