STMicroelectronics L6470H, Stepper Motor Driver IC, 45 V 3A 28-Pin, TSSOP

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Packaging Options:
RS Stock No.:
828-9898
Mfr. Part No.:
L6470H
Brand:
STMicroelectronics
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Brand

STMicroelectronics

Motor Type

Stepper

Output Configuration

Bipolar

Maximum IGBT Collector Current

3A

Maximum Collector Emitter Voltage

45 V

Mounting Type

Surface Mount

Package Type

TSSOP

Pin Count

28

Maximum Operating Supply Voltage

45 V

Minimum Operating Supply Voltage

8 V

Typical Switching Frequency

125kHz

Dimensions

9.8 x 4.5 x 1.05mm

Width

4.5mm

Height

1.05mm

Minimum Operating Temperature

-40 °C

Length

9.8mm

Maximum Operating Temperature

+150 °C

Stepper Motor Drivers, STMicroelectronics


Fully integrated microstepping motor driver with motion engine and SPI


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.

Key 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


    • Motor Controllers & Drivers, STMicroelectronics

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