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A3977SLP-T - Allegro Microsystems

Description: ALLEGRO MICROSYSTEMS - A3977SLP-T - DRIVER, TRANSLATOR, SMD, TSSOP28

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PCB Footprints
A3977SLP-T - Allegro Microsystems PCB footprint - Other - Other - LP_28-pin eTSSOP
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3D Models
A3977SLP-T - Allegro Microsystems  - 3D model - Other - LP_28-pin eTSSOP
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A3977SLP-T Details

  • Manufacturer Part Number:

    A3977SLP-T

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSSOP

  • Package Description:

    LEAD FREE, 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 A 8V TO 35V SUPPLY

  • Analog IC - Other Type:

    STEPPER MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    2

  • 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

  • Peak Reflow Temperature (Cel):

    260

  • 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:

    NMOS

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

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

    40

  • Width:

    4.4 mm

A3977SLP-T Frequently Asked Questions (FAQs)

  • The A3977SLP-T can operate from -20°C to 85°C (TJ) and is suitable for automotive applications.
  • The A3977SLP-T requires a single 5 V supply (VCC) and a separate logic supply (VDD) for the internal logic and interface. Ensure both supplies are properly decoupled and filtered.
  • The VREF pin is used to set the internal reference voltage for the device. It should be connected to a stable voltage source, typically VCC, through a resistor divider network.
  • The A3977SLP-T can be configured for half-bridge or H-bridge operation by connecting the appropriate pins (e.g., HBEN, LBEN, and DEAD) and setting the input logic levels accordingly.
  • The dead time between the high-side and low-side switches is programmable through the DEAD pin and can be set to a minimum of 100 ns.

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A3977SLP-T Overview

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