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A3982SLB-T - Allegro Microsystems

Description: ALLEGRO MICROSYSTEMS - A3982SLB-T - DMOS Stepper Motor Driver with Translator, 3V to 5.5V supply, 35V/2A/4 Outputs, SOIC-24

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A3982SLB-T Details

  • Manufacturer Part Number:

    A3982SLB-T

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    24

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Allegro MicroSystems LLC

  • YTEOL:

    7

  • Analog IC - Other Type:

    STEPPER MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G24

  • JESD-609 Code:

    e3

  • Length:

    15.4 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -20 °C

  • Output Current-Max:

    2 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP24,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    3 V

  • Surface Mount:

    YES

  • Technology:

    NMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    40

  • Width:

    7.5 mm

A3982SLB-T Frequently Asked Questions (FAQs)

  • Allegro provides a recommended PCB layout in their application note AN296040, which includes guidelines for component placement, trace routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
  • The sense resistor value depends on the maximum current rating of the A3982SLB-T and the desired current sense accuracy. Allegro provides a sense resistor calculation tool on their website, which can help engineers determine the optimal sense resistor value for their specific application.
  • The A3982SLB-T has an operating temperature range of -40°C to 150°C, but the maximum junction temperature (TJ) should not exceed 150°C. Engineers should ensure that the device is properly cooled and that the maximum TJ is not exceeded to ensure reliable operation.
  • The A3982SLB-T has a built-in overcurrent protection feature that can be enabled by connecting the OCP pin to a resistor and capacitor network. Allegro provides a detailed application note (AN296041) that explains how to implement overcurrent protection using the A3982SLB-T.
  • Allegro recommends using a 10 μF to 22 μF decoupling capacitor with a voltage rating of 25 V or higher, placed as close as possible to the VCC pin of the A3982SLB-T. This helps to filter out noise and ensure stable operation.

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A3982SLB-T Overview

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