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UC2845DG4 - Texas Instruments

Description: Switching Controllers Current-Mode PWM Controller

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UC2845DG4 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (-R-PDSO-G14)_1
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UC2845DG4 - Texas Instruments  - 3D model - Small Outline Packages - D (-R-PDSO-G14)_1
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UC2845DG4 Details

  • Manufacturer Part Number:

    UC2845DG4

  • 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:

    8542.39.00.60

  • 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:

    7.6 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 Outputs:

    1

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    1 A

  • Output Voltage-Max:

    80 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):

    8.4 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BUCK-BOOST

  • Switching Frequency-Max:

    500 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    INDUSTRIAL

  • 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

UC2845DG4 Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for UC2845DG4 is 12V to 35V, although it can operate up to 40V with reduced performance.
  • The value of CT depends on the desired switching frequency and the output voltage. A general guideline is to use a value between 1nF to 10nF, with a higher value resulting in a lower switching frequency.
  • The UC2845DG4 can handle a maximum output current of 5A, although this may vary depending on the specific application and operating conditions.
  • To ensure CCM operation, the inductor value should be chosen such that the inductor current does not fall to zero during the switching cycle. A general guideline is to use an inductor value that results in a ripple current of 10-20% of the output current.
  • The soft-start pin (SS) is used to slowly ramp up the output voltage during startup, reducing inrush current and electromagnetic interference (EMI). It can be connected to a capacitor to ground to set the soft-start time.

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UC2845DG4 Overview

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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.

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Part Image UC2845DTRG4 Texas Instruments

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