L6470

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Fully integrated microstepping motor driver with motion engine and SPI

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Product overview

Description

The L6470 device, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping. It integrates a dual low RDS(on)DMOS full bridge with all of the power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protection. Thanks to a unique control system, a true 1/128 steps resolution is achieved. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set. All commands and data registers, including those used to set analogue values (i.e. current control value, current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A very rich set of protections (thermal, low bus voltage, overcurrent, motor stall) allows the design of a fully protected application, as required by the most demanding motor control applications.

  • All features

    • Operating voltage: 8 - 45 V
    • 7.0 A out peak current (3.0 A r.m.s.)
    • Low RDS(on)Power MOSFETs
    • Programmable speed profile and positioning
    • Programmable power MOS slew rate
    • Up to 1/128 microstepping
    • Sensorless stall detection
    • SPI interface
    • Low quiescent and standby currents
    • Programmable non-dissipative overcurrent protection on high and low-side
    • Two-levels of overtemperature protection

Circuit Diagram

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STMicroelectronics - L6470

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6470H
Active
HTSSOP28 Industrial Ecopack2
L6470HTR
Active
HTSSOP28 Industrial Ecopack2
L6470PD
Active
PowerSO 36 Industrial Ecopack1
L6470PDTR
Active
PowerSO 36 Industrial Ecopack1

L6470H

Package:

HTSSOP28

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP28

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6470HTR

Package:

HTSSOP28

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP28

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6470PD

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L6470PDTR

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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L6470HTR
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L6470PDTR
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L6470PD
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L6470H
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L6470HTR Active

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Part Number:

L6470HTR

Operating Temperature (°C)

Min:

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L6470PDTR Active

Budgetary Price (US$)*/Qty:
-
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ECCN (EU):

Part Number:

L6470PDTR

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Min:

Max:

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L6470PD Active

Budgetary Price (US$)*/Qty:
-
Package:
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ECCN (EU):

Part Number:

L6470PD

Operating Temperature (°C)

Min:

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L6470H Active

Budgetary Price (US$)*/Qty:
-
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ECCN (US):
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Part Number:

L6470H

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors