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UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile

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    Buy cheap UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile from wholesalers
     
    Buy cheap UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile from wholesalers
    • Buy cheap UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile from wholesalers
    • Buy cheap UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile from wholesalers
    • Buy cheap UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile from wholesalers

    UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile

    Ask Lasest Price
    Brand Name : Texas Instruments
    Model Number : UC2843BDG
    Certification : CE, GCF, ROHS
    Price : Negotiable
    Payment Terms : T/T, Western Union,
    Supply Ability : 1000pcs per month
    Delivery Time : 3-5 working days after received the payment
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    UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile

    UC2843BDG Current-Mode PWM Controller 500kHz Operation High Drive Output Wide 8V-30V Input Precision Reference Low Cost Robust Protection Versatile for Power Supplies


    Features

    • Trimmed Oscillator for Precise Frequency Control

    • Oscillator Frequency Guaranteed at 250 kHz

    • Current Mode Operation to 500 kHz

    • Automatic Feed Forward Compensation

    • Latching PWM for Cycle−By−Cycle Current Limiting

    • Internally Trimmed Reference with Undervoltage Lockout

    • High Current Totem Pole Output

    • Undervoltage Lockout with Hysteresis

    • Low Startup and Operating Current

    • This is a Pb−Free and Halide−Free Device


    Applications

    1:Off-line switching power supplies (AC-DC converters): Power adapters (e.g., laptops, monitors), industrial power systems, consumer electronics (TVs, audio equipment).

    2:DC-DC converters: Boost converters (battery voltage step-up), flyback converters (isolated power supplies up to 100W-150W).


    Description

    The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.

    Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering.

    These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage.

    The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).


    INFORMATION

    Category
    Manufacturer
    onsemi
    Series
    -
    Packaging
    Tube
    Part Status
    Obsolete
    Output Type
    Transistor Driver
    Function
    Step-Up, Step-Up/Step-Down
    Output Configuration
    Positive, Isolation Capable
    Topology
    Boost, Flyback
    Number of Outputs
    1
    Output Phases
    1
    Voltage - Supply (Vcc/Vdd)
    7.6V ~ 30V
    Frequency - Switching
    Up to 500kHz
    Duty Cycle (Max)
    96%
    Synchronous Rectifier
    No
    Clock Sync
    No
    Serial Interfaces
    -
    Control Features
    Frequency Control
    Operating Temperature
    -25°C ~ 85°C (TA)
    Mounting Type
    Surface Mount
    Package / Case
    14-SOIC (0.154", 3.90mm Width)
    Supplier Device Package
    14-SOIC
    Base Product Number

    Drawing

    Our advantage :phones, PDA's, notebook comput.ers

    • High quality products --- our offers are 100% new and original, ROHS
    • Competitive price --- good Purchase channels with good price.
    • Professional service --- strict quality testing before the shipment, and perfect after-sales service after the purchase.
    • Adequate inventory --- With the support of our strong Purchasing team,
    • Fast delivery --- we will ship the goods within 1-3 working days after the payment confirmed.

    be sure to meet your need for all kinds of components. ^_^


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