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UC3842AN - Motorola

Description: Swithed-Mode Power Supply Controller, Current Mode Type, Bi-Polar, 8 Pin, Plastic, DIP

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UC3842AN - Motorola PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N SUFFIX PLASTIC PACKAGE CASE 626–05
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UC3842AN - Motorola  - 3D model - Dual-In-Line Packages - N SUFFIX PLASTIC PACKAGE CASE 626–05
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UC3842AN Details

  • Manufacturer Part Number:

    UC3842AN

  • Rohs Code:

    No

  • Part Life Cycle Code:

    Transferred

  • Package Description:

    DIP, DIP8,.3

  • Reach Compliance Code:

    Unknown

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Motorola Semiconductor Products

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    30 V

  • Input Voltage-Min:

    11.5 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-Nom:

    2.5 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:

    4.45 mm

  • Supply Current-Max (Isup):

    17 mA

  • Surface Mount:

    NO

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC3842AN Frequently Asked Questions (FAQs)

  • The maximum voltage rating for the UC3842AN is 30V, but it's recommended to operate it within 15V to ensure reliable operation.
  • The switching frequency of the UC3842AN can be calculated using the formula: f = 1 / (RT * CT), where RT is the resistance of the timing resistor and CT is the capacitance of the timing capacitor.
  • The soft-start pin (SS) is used to slowly ramp up the output voltage during startup, reducing inrush current and preventing voltage overshoots. It can be connected to a capacitor to ground to set the soft-start time.
  • The voltage feedback loop can be compensated using a type II compensator network, consisting of a series resistor and capacitor connected between the output of the error amplifier and the inverting input of the comparator.
  • The maximum output current of the UC3842AN is 1.5A, but it's recommended to operate it within 1A to ensure reliable operation and prevent overheating.

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UC3842AN Overview

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Part Image IP3842AJ TT Electronics Power and Hybrid / Semelab Limited

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Part Image IP3842J TT Electronics Power and Hybrid / Semelab Limited

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Part Image UC3842N STMicroelectronics

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For a full list of alternate parts for UC3842AN, check out Findchips.com