Please enter a minimum 3 letters or numbers
Technical Content
Part Image

A3955SLB-T - Allegro Microsystems

Description: ALLEGRO MICROSYSTEMS - A3955SLB-T - MOTOR DRIVER, FULL BRIDGE, PWM, SMD

Download A3955SLB-T Model
Schematic
symbols
Schematic symbol is unavailable for download
PCB
footprints
PCB footprint is unavailable for download
3D
models
3D model is unavailable for download
Send part feedback
Symbol
A3955SLB-T - Allegro Microsystems - PCB symbol
click to zoom
PCB Footprints
A3955SLB-T - Allegro Microsystems PCB footprint - Small Outline Packages - Small Outline Packages - LB,16-pin SOICW--0
click to zoom
3D Models
A3955SLB-T - Allegro Microsystems - 3D model - Small Outline Packages - LB,16-pin SOICW--0
click to zoom

A3955SLB-T Details

  • Manufacturer Part Number:

    A3955SLB-T

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    LEAD FREE, PLASTIC, MS-013AA, SOIC-16

  • Pin Count:

    16

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Allegro MicroSystems LLC

  • YTEOL:

    0

  • Additional Feature:

    ALSO REQUIRES 5V TO 50V VBB SUPPLY

  • Analog IC - Other Type:

    STEPPER MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e3

  • Length:

    10.3 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -20 °C

  • Output Current-Max:

    1.5 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Current-Max (Isup):

    50 mA

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    OTHER

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    40

  • Width:

    7.5 mm

A3955SLB-T Frequently Asked Questions (FAQs)

  • A good PCB layout for the A3955SLB-T involves keeping the high-current paths short and wide, using a solid ground plane, and placing the decoupling capacitors close to the device. Allegro provides a recommended PCB layout in their application note AN296070.
  • The sense resistor value depends on the desired current sense accuracy and the maximum current rating of the application. A good starting point is to use a 1% or 0.5% tolerance resistor with a value between 0.01 ohms and 0.1 ohms. The datasheet provides a formula to calculate the sense resistor value based on the desired current sense accuracy.
  • The A3955SLB-T has an operating temperature range of -20°C to 85°C. However, the device can be operated at temperatures above 85°C with derated specifications. It's essential to consult the datasheet for the derating curves and thermal management guidelines.
  • The A3955SLB-T has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features. However, additional protection can be achieved by using external components such as TVS diodes, zener diodes, or voltage regulators to clamp the input voltage within the recommended operating range.
  • The recommended input capacitor value depends on the input voltage ripple and the desired output voltage stability. A good starting point is to use a 10uF to 22uF ceramic capacitor with a voltage rating of 25V or higher, placed close to the device's input pins.

Trust Checks

This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored

A3955SLB-T Overview

Use the download button to access the A3955SLB-T schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like A3955, or try a keyword search, such as Motion Control Electronics

Parts related to A3955SLB-T

Showing 0 results

Part Image

← Prev Next →
About Us Contact Us Terms of Service Do not sell or share my personal information Privacy Policy Digital Services Act Library Loader Twitter LinkedIn

All content Copyright © 2020, Supplyframe.com. All rights reserved. Back to top ↑

A3955SLB-T Alternates

Showing results

Image Part Number Model
Part Image A4975SLBTR-T Allegro MicroSystems LLC

Stepper Motor Controller, PDSO16
Part Image A3955SLB Sanken Electric Co Ltd

Stepper Motor Controller, 1.5A, PDSO16
Part Image A3955SLBTR Allegro MicroSystems LLC

Stepper Motor Controller, 1.5A, BIPolar, PDSO16