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UC2845BD1R2G - 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

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UC2845BD1R2G - onsemi PCB footprint - Small Outline Packages - Small Outline Packages - SOIC-8 NB CASE 751-07 ISSUE AK
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UC2845BD1R2G - onsemi  - 3D model - Small Outline Packages - SOIC-8 NB CASE 751-07 ISSUE AK
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UC2845BD1R2G Details

  • Manufacturer Part Number:

    UC2845BD1R2G

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC-8 Narrow Body

  • Package Description:

    SOIC-8 Narrow Body-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    751-07

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    15 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    6

  • 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-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -25 °C

  • Output Current-Max:

    1 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.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:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.9 mm

UC2845BD1R2G Frequently Asked Questions (FAQs)

  • A good PCB layout for the UC2845BD1R2G involves keeping the input and output stages separate, using a star-ground configuration, and placing the IC close to the input capacitors. Additionally, using a ground plane and shielding can help reduce EMI.
  • Choose input capacitors with low ESR and high ripple current rating. For output capacitors, select ones with low ESR and high capacitance. The capacitor values should be based on the specific application's requirements, such as output voltage and current.
  • The UC2845BD1R2G can operate in an ambient temperature range of -40°C to 125°C. However, the maximum junction temperature (TJ) should not exceed 150°C.
  • Yes, the UC2845BD1R2G can be used in a synchronous rectification topology. However, it requires additional components and careful design to ensure proper operation and minimize losses.
  • To troubleshoot issues with the UC2845BD1R2G, check the PCB layout, component values, and voltage rails. Ensure that the input and output capacitors are properly selected and placed. Use an oscilloscope to measure the voltage and current waveforms to identify the source of the issue.

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UC2845BD1R2G Overview

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