Part Image

UC3845BNG - onsemi

Description: High Current Totem Pole Output; Current Mode Operation to 500 kHz Output Switching Frequency; Latching PWM for Cycle-By-Cycle Current Limiting; Automatic Feed Forward Compensation; Internally Trimmed Reference with Undervoltage Lockout; Undervoltage Lockout with Hysteresis; Oscillator Frequency Guaranteed at 250 kHz; Low Startup and Operating Current; Trimmed Oscillator for Precise Frequency Control; Output Deadtime Adjustable from 50% to 70%; Pb-Free Packages are Available

Download UC3845BNG 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
UC3845BNG - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - PDIP-8 CASE626-05 ISSUE P
click to zoom
3D Models
UC3845BNG - onsemi  - 3D model - Dual-In-Line Packages - PDIP-8 CASE626-05 ISSUE P
click to zoom

UC3845BNG Details

  • Manufacturer Part Number:

    UC3845BNG

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8 LEAD PDIP

  • Package Description:

    PDIP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    626-05

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    5

  • 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-PDIP-T8

  • JESD-609 Code:

    e3

  • Length:

    9.78 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    1 A

  • 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:

    275 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

UC3845BNG Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the UC3845BNG is 12V to 28V, with a maximum rating of 30V.
  • To ensure stability, it's essential to follow the recommended layout guidelines, use a suitable output capacitor, and add a compensation network (e.g., a type 2 compensator) to the feedback loop.
  • The soft-start pin (SS) is used to gradually ramp up the output voltage during startup, reducing inrush currents and preventing output voltage overshoot.
  • Yes, the UC3845BNG can be used for isolated topologies like flyback converters, but it requires additional components, such as a transformer and an optocoupler, to provide isolation and feedback.
  • The maximum duty cycle can be calculated using the formula: Dmax = (Vout + Vf) / Vin, where Vout is the output voltage, Vf is the forward voltage drop of the output diode, and Vin is the input voltage.

Trust Checks

This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored

UC3845BNG Overview

Use the download button to access the UC3845BNG 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

Parts related to UC3845BNG

Showing 0 results

UC3845BNG Alternates

Showing results

Image Part Number Model
Part Image UC2845BNG onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDIP8

Part Image UC3845BN onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDIP8

Part Image UC2845BN onsemi

Switching Controller, Current-mode, 1A, 275kHz Switching Freq-Max, BIPolar, PDIP8