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UC3843AN - onsemi

Description: Obsolete - High Performance Current Mode PWM Controller

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UC3843AN - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - PDIP-8 CASE626-05 ISSUE L
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UC3843AN - onsemi  - 3D model - Dual-In-Line Packages - PDIP-8 CASE626-05 ISSUE L
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UC3843AN Details

  • Manufacturer Part Number:

    UC3843AN

  • Brand Name:

    onsemi

  • Pbfree Code:

    No

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    DIP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    626-05

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    30 V

  • Input Voltage-Min:

    8.2 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e0

  • Length:

    9.78 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    1 A

  • Output Voltage-Max:

    5.1 V

  • Output Voltage-Min:

    4.9 V

  • Output Voltage-Nom:

    5 V

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Peak Reflow Temperature (Cel):

    235

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.45 mm

  • Surface Mount:

    NO

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC3843AN Frequently Asked Questions (FAQs)

  • The maximum voltage rating of the UC3843AN is 30V, but it's recommended to operate it within 15V to ensure reliable operation.
  • The minimum input voltage required for the UC3843AN is typically 8.5V, but it depends on the output voltage and current requirements. A general rule of thumb is to add 2-3V to the maximum output voltage to ensure proper operation.
  • The Vref pin on the UC3843AN is a 5V reference voltage output that can be used as a voltage reference for external circuits or as a supply voltage for low-power devices.
  • The switching frequency of the UC3843AN is set by the values of the RT and CT components connected to the oscillator pins. The frequency can be calculated using the formula: f = 1.12 / (RT * CT).
  • The maximum duty cycle of the UC3843AN is 50%, but it's recommended to operate it at a duty cycle of 40% or less to ensure reliable operation and prevent overheating.

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UC3843AN Overview

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Part Image UC3843AN2G onsemi

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8

Part Image UC3843AN2 onsemi

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8