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UC2950T - Texas Instruments

Description: Half Bridge Bipolar Switch 5-Pin

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UC2950T Details

  • Manufacturer Part Number:

    UC2950T

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SFM

  • Package Description:

    TO-220, 5 PIN

  • Pin Count:

    3

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Built-in Protections:

    THERMAL

  • Driver Number of Bits:

    1

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    HALF BRIDGE BASED PERIPHERAL DRIVER

  • JESD-30 Code:

    R-PSFM-T5

  • JESD-609 Code:

    e3

  • Length:

    10.16 mm

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    5

  • Operating Temperature-Max:

    100 °C

  • Operating Temperature-Min:

    -20 °C

  • Output Characteristics:

    3-STATE

  • Output Current Flow Direction:

    SOURCE AND SINK

  • Output Current-Max:

    4 A

  • Output Peak Current Limit-Nom:

    4 A

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TO-220

  • Package Equivalence Code:

    SIP5,.1,67TB

  • Package Shape:

    RECTANGULAR

  • Package Style:

    FLANGE MOUNT

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.7 mm

  • Supply Current-Max:

    36 mA

  • Supply Voltage-Max:

    8 V

  • Supply Voltage-Min:

    8 V

  • Supply Voltage-Nom:

    12 V

  • Surface Mount:

    NO

  • Technology:

    BIPOLAR

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    1.7 mm

  • Terminal Position:

    SINGLE

  • Turn-off Time:

    2 µs

  • Turn-on Time:

    0.5 µs

  • Width:

    8.51 mm

UC2950T Frequently Asked Questions (FAQs)

  • The UC2950T requires careful layout and placement to ensure proper operation. TI recommends placing the IC close to the battery, using a star-ground configuration, and keeping the input and output capacitors close to the IC. A 4-layer PCB with a solid ground plane is also recommended.
  • The inductor value and type depend on the input voltage, output voltage, and desired output current. TI recommends using an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value (e.g., 10-22 μH).
  • The UC2950T can operate with input voltages up to 28V, but TI recommends limiting the input voltage to 24V for reliable operation and to prevent damage to the IC.
  • The output voltage of the UC2950T can be adjusted by changing the resistor divider network (R1 and R2) connected to the FB pin. The output voltage is calculated using the formula: Vout = 1.25V x (1 + R2/R1).
  • The EN (enable) pin is used to enable or disable the UC2950T. When the EN pin is pulled low, the IC is disabled, and the output voltage is turned off. This pin can be used to implement power-saving modes or to shut down the converter during fault conditions.

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UC2950T 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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