MTD2018G

W1002

Shindengen Electric Mfg.Co.Ltd

Dual Full-bridge

Microstepping PWM Motor Driver

Stepper Motor Driver IC

MTD Series

Output voltage

Output current

Logic supply

Logic input

V

A

V

V

W

℃

℃

35

0.8

0∼3.6

0∼Vcc

2.1

-40∼150

150

Vmm

I

OUT

Vcc

V

LOGIC

P

Tstg

Tj

STB

L

H

Mode

stand by

active

PHA 1 or 2

H

L

H

L

OUT A

L

H

OUT B

HSOP24

Vmm 2

SENSE 2

SENSE 1

Vmm 1

1

2

I0 2

I1 2

Vs 2

VREF 2

CR 2

GND

STB

CR 1

VREF 1

Vs 1

I1 1

PHA 2

Vcc 2

OUT 2A

OUT 2B

OUT 1B

OUT 1A

Vcc 1

PHA 1

I0 1

GND

GND

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

TOP VIEW

MTD2018G

L

H

H

L

H

L

H

L

I0

I1

0.109±10%

0.221±8%

-

0.330±5%

Vr[V]

(at VREF=3.3V)

33

67

0

100

Output current

ratio[%]

Features

●Dual full bridge for a bipolar stepper motor driver

●Load supply voltage 35V , Output current 0.8A

●Constant current control (Fixed OFF time PWM control)

●2-bit selectable current level (Full step/Half step/Quarter step)

●Logic supply 3.3V only

●Stand-by function

●Built-in flywheel and flyback diodes

●Under voltage lock out function

●Thermal shutdown with hysteresis

●Surface mount package with heat sink(HSOP24)

■Absolute maxmum ratings / Ta=25℃

Power dissipation

Storage temperature range

Maximum Junction temperature

Parameter

Symbol

Rating

Unit

■Pin Assignment

■Truth table