SLA7070MPRT Series: Unipolar 2-Phase Stepper Motor Driver ICs

This document describes the SLA7070MPRT series, which are unipolar 2-phase stepping motor driver ICs. The SLA7070MPRT series employs a clock input method as a control signal input method, enabling full control of the device operation using only a few signal lines, instead of the conventional phase input method that requires about 10 signal lines. This allows simplification of the circuit design and a reduced workload on the control microprocessor.

In addition, the SLA7070MPRT series is improved in its reliability by preventing the IC from damage due to abnormal conditions. For example, it has a flag output terminal to signal that a protection circuit has operated. The series also has a built-in protection circuitry against motor coil opens/shorts and thermal shutdown protection as well.

All the SLA7070MPRT series ICs are compatible in their pin layouts and interface specifications, allowing customers the flexibility of choosing the IC that is optimal for the target equipment characteristics.

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  • Power supply voltages, VBB: 46 V (max.), 10 to 44 V normal operating range
  • Logic supply voltages, VDD: 3.0 to 5.5 V
  • Maximum output currents: 1 A, 1.5 A, 2 A, 3  A
  • Built-in sequencer
  • Full-, half-, and microstepping available (microstepping options are capable of full-, half-, quarter-, eighth-, and sixteenth-stepping
  • Built-in sense resistor, RSInt
  • All variants are pin-compatible for enhanced design flexibility
  • ZIP type 23-pin molded package (SLA package)
  • Self-excitation PWM current control with fixed off-time (microstepping options off-time adjusted automatically by step reference current ratio; 3 levels)
  • Built-in synchronous rectifying circuit reduces losses at PWM-off
  • Synchronous PWM chopping function prevents motor noise in Hold mode
  • Sleep mode for reducing the IC input current in stand-by state
  • Built-in protection circuitry against motor coil opens/shorts and thermal shutdown protection options
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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SLA7070MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
SLA7071MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
SLA7072MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
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SLA7073MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
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SLA7075MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
Check Stock
SLA7076MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
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SLA7077MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
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SLA7078MPRT 23-lead ZIP -20°C to 85°C Yes View Data New Contact your
local sales rep
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