2-Phase Unipolar Stepper Motor Driver

SLA707xM Series

February, 2006

Sanken Electric Co.,Ltd.

I03-004EA-060227

Scope

The present specifications shall apply to a micro-stepping capable 2-phase unipolar stepper motor

driver IC, SLA7077MR and shall apply to the devices compliant with RoHS Directive.

Lead part solder: Pb free.

Inner solder: Containing Pb > 85%.

* Please refer to the electric characteristics in the application note for other devices of the series.

Outline

Type

Hybrid integrated circuit

Structure

Plastic molded (transfer mold)

Applications

To drive a 2-phase stepper motor.

(Micro-Stepping Capable. PWM Constant-Current Control.)

Absolute maximum ratings

Parameter

Symbol

Ratings

Unit

Remarks

Load Supply Voltage

46

V

Main Power Supply Voltage

46

V

Logic Supply Voltage

7

V

Output Current

2.0*

A

Vref=0.4V, Mode F

Logic Input Voltage

V

REF Input Voltage

V

Sense Voltage

VRS

±2

V

Except for tw<1µs

4.7

W

At Ta=25°C

Power Dissipation

PD

17

W

At Tc=25°C

Junction Temperature

Tj

150

°C

Operating Temperature Range

Ta

-20 to 85

°C

Storage Temperature Range

Tstg

-30 to 150

°C

*Output current rating may be limited by duty cycle, ambient temperature, and heat sinking.

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