L6474PD データシートの表示（PDF） - STMicroelectronics
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L6474PD Datasheet PDF : 53 Pages
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L6474
Fully integrated microstepping motor driver
Datasheet - production data
Applications
Bipolar stepper motor
POWERSO36
HTSSOP28
Features
Operating voltage: 8 - 45 V
7.0 A output peak current (3.0 A r.m.s.)
Low RDS(on) power MOSFETs
Programmable power MOS slew rate
Up to 1/16 microstepping
Current control with adaptive decay
Non-dissipative current sensing
SPI interface
Low quiescent and standby currents
Programmable non-dissipative overcurrent
protection on all power MOS
Two-level overtemperature protection
Description
The L6474 device, realized in analog mixed
signal technology, integrates a dual low RDS(on)
DMOS full bridge with all power switches
equipped with an accurate on-chip current
sensing circuitry suitable for non-dissipative
current control and overcurrent protections.
Thanks to a new current control, a 1/16
microstepping is achieved through an adaptive
decay mode which outperforms traditional
implementations.
All data registers, including those used to set
analogue values (i.e.: current control value,
current protection trip point, deadtime, etc.) are
sent through a standard 5 Mbit/s SPI.
A very rich set of protections (thermal, low bus
voltage, overcurrent) makes the L6474 device
“bullet proof” as required by the most demanding
motor control applications.
Order code
L6474H
L6474HTR
L6474PD
L6474PDTR
Table 1. Device summary
Package
HTSSOP28
HTSSOP28
POWERSO36
POWERSO36
Packing
Tube
Tape and reel
Tube
Tape and reel
March 2015
This is information on a product in full production.
DocID022529 Rev 4
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