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A3979SLP - Allegro Microsystems

Description: IC MOTOR DRIVER PAR 28TSSOP

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Symbol
A3979SLP - Allegro Microsystems - PCB symbol
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PCB Footprints
A3979SLP - Allegro Microsystems PCB footprint - Other - Other - LP_28-pin eTSSOP
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3D Models
A3979SLP - Allegro Microsystems - 3D model - Other - LP_28-pin eTSSOP
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A3979SLP Details

  • Manufacturer Part Number:

    A3979SLP

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSSOP

  • Package Description:

    1.2 MM HEIGHT, EXPOSED PAD, MO-153AET, TSSOP-28

  • Pin Count:

    28

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Allegro MicroSystems LLC

  • YTEOL:

    0

  • Additional Feature:

    ALSO REQUIRES 8V TO 35V VBB SUPPLY

  • Analog IC - Other Type:

    STEPPER MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e0

  • Length:

    9.7 mm

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -20 °C

  • Output Current-Max:

    2.5 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Equivalence Code:

    TSSOP28,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

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

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.2 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    3 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    BCDMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

A3979SLP Frequently Asked Questions (FAQs)

  • Allegro recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to minimize thermal resistance. A minimum of 2 oz copper thickness is recommended.
  • To ensure accurate current sensing, use a low-impedance current sense resistor (CSR) and place it as close as possible to the device. Also, ensure the CSR is properly decoupled from the power supply and the device's output stage.
  • The maximum allowed voltage on the VREG pin is 5.5V. Exceeding this voltage may damage the device. It's recommended to use a voltage regulator or a Zener diode to limit the voltage to 5V or less.
  • The A3979SLP has a built-in POR and UVLO circuitry. To handle these features, ensure a proper power-up sequence, and use a capacitor on the VREG pin to filter out noise and ensure a clean power-on reset.
  • The recommended operating temperature range for the A3979SLP is -40°C to 150°C. However, the device can operate up to 170°C for short periods. Ensure proper thermal management to prevent overheating.

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A3979SLP Overview

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A3979SLP Alternates

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For a full list of alternate parts for A3979SLP, check out Findchips.com