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A4955GLPTR-T - Allegro Microsystems

Description: Single Full Brdige MOSFET Driver

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Symbol
A4955GLPTR-T - Allegro Microsystems - PCB symbol
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PCB Footprints
A4955GLPTR-T - Allegro Microsystems PCB footprint - Other - Other - LP,20-Lead TSSOP
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3D Models
A4955GLPTR-T - Allegro Microsystems - 3D model - Other - LP,20-Lead TSSOP
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A4955GLPTR-T Details

  • Manufacturer Part Number:

    A4955GLPTR-T

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    TSSOP-20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Allegro MicroSystems LLC

  • YTEOL:

    8.2

  • Analog IC - Other Type:

    FULL BRIDGE BRUSH DC MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    6.5 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

  • Seated Height-Max:

    1.2 mm

  • Supply Voltage-Max (Vsup):

    50 V

  • Supply Voltage-Min (Vsup):

    5.5 V

  • Surface Mount:

    YES

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

A4955GLPTR-T Frequently Asked Questions (FAQs)

  • A good PCB layout for the A4955GLPTR-T involves keeping the high-current paths short and wide, using a solid ground plane, and placing the device close to the battery. A 4-layer PCB with a dedicated layer for the high-current path is recommended.
  • Proper thermal management involves providing a good thermal path from the device to a heat sink or the PCB. Use thermal vias, thermal pads, and a heat sink to dissipate heat. Ensure good airflow and avoid blocking airflow around the device.
  • A ceramic capacitor with a value of 10uF to 22uF is recommended for the input capacitor. The capacitor should be placed close to the device and have a low ESR to minimize voltage ripple.
  • Check the input voltage, output voltage, and current sense resistor values. Verify that the device is properly configured and that the PCB layout is correct. Use an oscilloscope to check for voltage ripple, noise, and current waveforms.
  • The maximum allowed voltage drop across the A4955GLPTR-T is 0.5V. Exceeding this voltage drop may cause the device to malfunction or reduce its lifespan.

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A4955GLPTR-T Overview

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