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LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics

Anterwell Technology Ltd.
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    Buy cheap LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics from wholesalers
     
    Buy cheap LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics from wholesalers
    • Buy cheap LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics from wholesalers

    LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics

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    Brand Name : Anterwell
    Model Number : LTC3851EUD-PBF
    Certification : new & original
    Price : Negotiate
    Payment Terms : T/T, Western Union, Paypal
    Supply Ability : 8200pcs
    Delivery Time : 1 day
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    LTC3851EUD-PBF Step Down Switching Regulator Controller chip in electronics


    LTC3851EUD-PBF Step-Down SwitchingRegulator Controller


    FEATURES


    Wide VIN Range: 4V to 38V

    Operation n RSENSE or DCR

    Current Sensing n ±1%

    Output Voltage Accuracy

    Phase-Lockable Fixed Frequency: 250kHz to 750kHz

    Dual N-Channel MOSFET Synchronous Drive

    Very Low Dropout Operation: 99% Duty Cycle

    Adjustable Output Voltage Soft-Start or Tracking

    Output Current Foldback Limiting

    Output Overvoltage Protection

    5V Internal Regulator n OPTI-LOOP® Compensation Minimizes COUT

    Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at Light Loads

    Low Shutdown IQ: 20μA

    VOUT Range: 0.8V to 5.5V

    16-Lead Narrow SSOP or 3mm × 3mm QFN Package


    APPLICATIONS


    Automotive Systems

    Telecom Systems

    Industrial Equipment

    Distributed DC Power Systems


    DESCRIPTION


    The LTC®3851 is a high performance synchronous step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A con stant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3851 features a precision 0.8V reference that is compatible with a wide 4V to 38V input supply range. The TK/SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse skipping mode or continuous inductor current mode at light loads and allows the IC to be synchronized to an external clock.


    TYPICAL APPLICATION



    ABSOLUTE MAXIMUM RATINGS


    Input Supply Voltage (VIN) ......................... 40V to –0.3V

    Topside Driver Voltage (BOOST) ................ 46V to –0.3V

    Switch Voltage (SW) ..................................... 40V to –5V

    NTVCC, (BOOST – SW), RUN ...................... 6V to –0.3V

    TK/SS, ILIM ............................................ INTVCC to –0.3V

    SENSE+, SENSE– .......................................... 6V to –0.3V

    MODE/PLLIN, FREQ/PLLFLTR ............... INTVCC to –0.3V

    ITH, VFB Voltages .......................................... 3V to –0.3V


    INTVCC Peak Output Current ..................................50mA

    Operating Temperature Range (Note 2).... –40°C to 85°C

    Junction Temperature (Note 3) ............................. 125°C

    Storage Temperature Range GN ..................................................... –65°C to 150°C

    UD .........................................................–65 to 125°C

    Lead Temperature (Soldering, 10 sec) GN .................................................................... 300°C


    PIN CONFIGURATION



    ORDER INFORMATION


    LEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE
    LTC3851EGN#PBFLTC3851EGN#TRPBF385116-Lead Plastic SSOP–40°C to 85°C
    LTC3851EUD#PBFLTC3851EUD#TRPBFLCXN16-Lead (3mm × 3mm) Plastic QFN–40°C to 85°C

    Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/


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