Part Image

UC3844BDG - onsemi

Description: High Performance Current Mode PWM Controller

Download UC3844BDG 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
3D Models
UC3844BDG - onsemi  - 3D model
click to zoom
Note! To download footprints and symbols, use the build and request forms below

Build

Launch Build Wizard
Build Wizard not available for this package category!

Request (48 hours)

UC3844BDG Details

  • Manufacturer Part Number:

    UC3844BDG

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC-14 NB

  • Package Description:

    SOIC-14 NB-14

  • Pin Count:

    14

  • Manufacturer Package Code:

    751A-03

  • 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:

    25 V

  • Input Voltage-Min:

    12 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e3

  • 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

  • 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):

    17 mA

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    275 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    40

  • Width:

    3.9 mm

UC3844BDG Frequently Asked Questions (FAQs)

  • The UC3844BDG can operate up to 500 kHz, but the recommended operating frequency is up to 400 kHz for optimal performance.
  • To ensure stable operation, it is recommended to decouple the VCC pin with a 10uF capacitor, use a 1kΩ to 10kΩ resistor in series with the feedback pin, and keep the layout clean and compact to minimize noise and EMI.
  • The soft-start pin (SS) is used to slowly ramp up the output voltage during startup, reducing inrush current and preventing voltage overshoot. It can be connected to a capacitor to ground to set the soft-start time.
  • Yes, the UC3844BDG can be used in a synchronous rectification topology, but it requires additional external circuitry to control the synchronous rectifier MOSFET. The UC3844BDG provides a dedicated pin (SYNC) to facilitate synchronous rectification.
  • To compensate the UC3844BDG for voltage mode control, a type II compensator is recommended, consisting of a series R-C network connected between the output of the error amplifier and the compensation pin (COMP). The values of the R-C network depend on the specific application and can be calculated using the datasheet equations.

Trust Checks

No trust score is available for this model.
Trust Score Unavailable
Sponsored

UC3844BDG Overview

Use the download button to access the UC3844BDG 3D model. You can still request or build the schematic symbol and PCB footprint by using the respective build or request forms on this page.
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

Parts related to UC3844BDG

Showing 0 results

Select Package Category

Package Categories

Datasheet PDF Preview

UC3844BDG Alternates

Showing results

Image Part Number Model
Part Image UC3844BDR2G onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC2844BDR2 onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3844BVDR2 onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3844BD onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDSO14

Part Image UC3844BVD onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDSO14

For a full list of alternate parts for UC3844BDG, check out Findchips.com