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UC2843BNG - onsemi

Description: Latching PWM for Cycle-By-Cycle Current Limiting; Oscillator Frequency Guaranteed at 250 kHz; Low Startup and Operating Current; Trimmed Oscillator for Precise Frequency Control; Internally Trimmed Reference with Undervoltage Lockout; Undervoltage Lockout with Hysteresis; Automatic Feed Forward Compensation; High Current Totem Pole Output; Current Mode Operation to 500 kHz; Pb-Free Packages are Available

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Symbol
UC2843BNG - onsemi - PCB symbol
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PCB Footprints
UC2843BNG - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - PDIP−8-1
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3D Models
UC2843BNG - onsemi - 3D model - Dual-In-Line Packages - PDIP−8-1
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UC2843BNG Details

  • Manufacturer Part Number:

    UC2843BNG

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8 LEAD PDIP

  • Package Description:

    PDIP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    626-05

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    14 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    6

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    25 V

  • Input Voltage-Min:

    12 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e3

  • Length:

    9.78 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -25 °C

  • Output Current-Max:

    1 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    RAIL

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.45 mm

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC2843BNG Frequently Asked Questions (FAQs)

  • The recommended input capacitor value is 10uF to 22uF, depending on the input voltage and output current requirements. A larger capacitor value can help reduce input voltage ripple and improve overall system stability.
  • The inductor value depends on the output voltage, output current, and switching frequency. A general rule of thumb is to choose an inductor value that results in a peak-to-peak ripple current of 20-30% of the output current. The datasheet provides a formula to calculate the inductor value based on these parameters.
  • The UC2843BNG is capable of delivering up to 3A of output current, depending on the input voltage and output voltage requirements. However, the actual output current capability may be limited by the thermal performance of the device and the PCB design.
  • To ensure the UC2843BNG operates within its SOA, follow the guidelines outlined in the datasheet for input voltage, output voltage, and output current. Additionally, ensure that the device is properly cooled, and the PCB design is optimized for thermal performance.
  • Yes, the UC2843BNG can be used in a synchronous rectification configuration to improve efficiency. However, this requires additional external components and careful design consideration to ensure proper operation.

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UC2843BNG Overview

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