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UC3843NG4 - Texas Instruments

Description: Switching Controllers Current-Mode PWM Controller

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UC3843NG4 - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - P (R-PDIP-T8)
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UC3843NG4 - Texas Instruments  - 3D model - Dual-In-Line Packages - P (R-PDIP-T8)
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UC3843NG4 Details

  • Manufacturer Part Number:

    UC3843NG4

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    8

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    28 V

  • Input Voltage-Min:

    8.2 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e4

  • Length:

    9.59 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    1 A

  • 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

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Current-Max (Isup):

    25 mA

  • Supply Voltage-Max (Vsup):

    28 V

  • Supply Voltage-Min (Vsup):

    8.4 V

  • Surface Mount:

    NO

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC3843NG4 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for UC3843NG4 is 12V to 28V, with a maximum rating of 30V.
  • The frequency of the oscillator in UC3843NG4 can be calculated using the formula: f = 1.12 / (Rt * Ct), where Rt is the resistance between the RT pin and ground, and Ct is the capacitance between the CT pin and ground.
  • The soft-start pin (SS) in UC3843NG4 is used to gradually increase the output voltage of the converter during startup, reducing inrush current and stress on the components.
  • The maximum duty cycle of the UC3843NG4 can be set by connecting a resistor (Rmax) between the Max Duty pin and ground, with a value calculated using the formula: Rmax = 1.2V / (Imax * 0.6), where Imax is the maximum output current.
  • The undervoltage lockout (UVLO) in UC3843NG4 is a protection feature that prevents the device from operating when the input voltage falls below a certain threshold (typically around 8.5V), ensuring that the device operates within a safe voltage range.

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UC3843NG4 Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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Image Part Number Model
Part Image UC3843N Texas Instruments

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