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L6474H - STMicroelectronics

Description: STMicroelectronics L6474H, Stepper Motor Controller, Bipolar Stepping Motor, 28-Pin TSSOP

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L6474H - STMicroelectronics - PCB symbol
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PCB Footprints
L6474H - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - HTSSOP28_1
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3D Models
L6474H - STMicroelectronics - 3D model - Small Outline Packages - HTSSOP28_1
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L6474H Details

  • Manufacturer Part Number:

    L6474H

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SSOP

  • Package Description:

    HTSSOP-28

  • Pin Count:

    28

  • Country Of Origin:

    Philippines

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    20 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    11

  • Additional Feature:

    OTHER NOMINAL SUPPLY VOLTAGE IS 5V AND MOTOR SUPPLY VOLTAGE IS 8V TO 45V

  • Analog IC - Other Type:

    STEPPER MOTOR CONTROLLER

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e3

  • Length:

    9.7 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    28

  • Output Current-Max:

    7 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 Current-Max (Isup):

    0.65 mA

  • Supply Voltage-Max (Vsup):

    45 V

  • Supply Voltage-Min (Vsup):

    8 V

  • Supply Voltage-Nom (Vsup):

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    NMOS

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    4.4 mm

L6474H Frequently Asked Questions (FAQs)

  • The maximum voltage that can be applied to the VM pin is 40V, but it's recommended to keep it below 35V for reliable operation.
  • The value of R Sense should be chosen based on the maximum current rating of the motor and the desired current sense accuracy. A good starting point is to use a value between 0.1 ohm and 1 ohm, and then adjust based on the specific application requirements.
  • The ENN pin is an enable input that allows the L6474H to be put into a low-power standby mode. When ENN is low, the device is disabled and consumes minimal power. To use it, simply tie ENN to a digital output from your microcontroller, and set it high to enable the L6474H and low to disable it.
  • To configure the L6474H for microstepping mode, you need to set the M1 and M2 pins accordingly. For example, to enable 16-microstep mode, set M1 high and M2 low. Refer to the datasheet for the specific pin configurations for different microstepping modes.
  • For optimal thermal performance, it's recommended to use a 4-layer PCB with a solid ground plane and to place the L6474H near a heat sink or a metal plate. Ensure good airflow around the device, and avoid placing heat-sensitive components nearby.

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L6474H Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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