Part Image

UC3844ADTR - Texas Instruments

Description: Current Mode PWM Controller

Download UC3844ADTR Model
Schematic
symbols
Schematic symbol is unavailable for download
PCB
footprints
PCB footprint is unavailable for download
3D
models
3D model is unavailable for download
PCB Footprints
UC3844ADTR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (-R-PDSO-G14)
click to zoom
3D Models
UC3844ADTR - Texas Instruments  - 3D model - Small Outline Packages - D (-R-PDSO-G14)
click to zoom

UC3844ADTR Details

  • Manufacturer Part Number:

    UC3844ADTR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    14

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • 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:

    11.5 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e4

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    14

  • 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:

    SOP

  • Package Equivalence Code:

    SOP14,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max (Isup):

    25 mA

  • Supply Voltage-Max (Vsup):

    28 V

  • Supply Voltage-Min (Vsup):

    16 V

  • Supply Voltage-Nom (Vsup):

    11 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    3.9 mm

UC3844ADTR Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the UC3844ADTR is 12V to 40V, with a maximum voltage rating of 42V.
  • The oscillator circuit requires two resistors, R1 and R2. A good starting point is to use R1 = 1kΩ and R2 = 2kΩ. Adjust these values to achieve the desired oscillator frequency.
  • The soft-start pin (SS) is used to gradually increase the output voltage during startup, reducing inrush currents. Connect a capacitor (typically 10nF to 100nF) from the SS pin to ground to set the soft-start time.
  • To ensure stability, use a compensation network consisting of a resistor (R) and a capacitor (C) in series, connected between the output of the error amplifier and the inverting input. A good starting point is R = 1kΩ and C = 10nF.
  • The UC3844ADTR can deliver up to 1A of output current, but this may vary depending on the specific application and thermal considerations.

Trust Checks

This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored

UC3844ADTR Overview

Use the download button to access the UC3844ADTR schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like UC384, or try a keyword search, such as Switching Regulator or Controllers

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.

Parts related to UC3844ADTR

Showing 0 results

UC3844ADTR Alternates

Showing results

Image Part Number Model
Part Image UC2844ADTR Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC2844AD Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3844ADG4 Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3844ADTRG4 Texas Instruments

Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14