ROHM BD6383EFV Technical data

A

Stepping Motor Driver series

High Performance, High Reliability
36V Stepping Motor Driver Series

BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM

●Description
BD6387EFV, BD6385EFV, BD6383EFV, BD6389FM are the high-grade type that provides the highest function and highest
reliance in the ROHM stepping motor driver series. This series has the perfect various protection circuits and reduces IC’s
generation of heat by adopting low-ON resistance DMOS and high heat-radiation power package.
As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power supply’s rated
voltage of 36V and rated output current of 1.0A～2.2A. For the input interface, the CLK-IN drive mode and the parallel IN
drive mode are compatible with each other, so please choose an input mode according to needs of application. There are
excitation modes of FULL STEP & HALF STEP (2 kinds), QUARTER STEP mode, and for current decay mode, the ratio of
FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for every motor can be realized. In
addition, being able to drive with one system of power supply makes contribution to the set design’s getting easy.

●Feature

1) Power supply: one system drive (rated voltage of 36V)

2) Rated output current: 1.0A, 1.5A, 2.0A, 2.2A

3) Low ON resistance DMOS output

4) CLK-IN drive mode (built-in translator circuit)

5) Parallel IN drive mode

6) Stepping motor／DC motor(×2) drives are selectable

7) PWM constant current control (self oscillation)

8) Built-in spike noise cancel function (external noise filter is unnecessary)

9) FULL STEP & HALF STEP (two kinds), applicable to QUARTER STEP

10) Applicable to the μSTEP drive

11) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio)

12) Normal rotation & reverse rotation switching function

13) Power save function

14) Built-in logic input pull-down resistor

15) Power-on reset function

16) Thermal shutdown circuit (TSD)

17) Over current protection circuit (OCP)

18) Under voltage lock out circuit (UVLO)

19) Over voltage lock out circuit (OVLO)

20) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention)

21) Electrostatic discharge: 6kV (HBM specification)

22) Adjacent pins short protection

23) Inverted mounting protection

24) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package
(BD6387EFV/BD6385EFV/BD6383EFV)

25) FIN heat-radiating type HSOP package (BD6389FM)

26) Pin-compatible line-up (BD6387EFV/BD6385EFV/BD6383EFV or BD6389FM)

●Application
PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, se wing machine, photo
printer, FAX, scann er, mini printer, toy, and robot etc.

No.12009EAT04

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© 2012 ROHM Co., Ltd. All rights reserved.

1/8

2012.02 - Rev.

BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM

A

Technical Note

●Absolute maximum ratings(Ta=25℃)

Item Symbol BD6387EFV BD6385EFV BD6383EFV BD6389FM Unit

Supply voltage V
Power dissipation Pd

-0.2～+36.0 V

CC0,1,2

1

※

2.8

1.6

2

※

4.7

5.2

3

※

4

※

W

W
Input voltage for control pin VIN -0.2～+5.5 V
RNF maximum voltage V

Maximum output current
Operating temperature range T

Storage temperature range T
Junction temperature T

1

※

70mm×70mm×1.6mm glass epoxy board. Derating in done at 12.8mW/℃ for operating above Ta=25℃.

2

※

4-layer recommended board. Derating in done at 37.6mW/℃ for operating above Ta=25℃.

3

※

70mm×70mm×1.6mm glass epoxy board. Derating in done at 22.4mW/℃ for operating above Ta=25℃.。

4

※

4-layer recommended board. Derating in done at 41.6mW/℃ for operating above Ta=25℃.

5

※

Do not, however exceed Pd, ASO and T

0.5 V

RNF

I

OUT

-25～+75 ℃

opr

-55～+150 ℃

stg

150 ℃

jmax

=150℃.

jmax

5

※

1.5

2.0

5

※

1.0

5

※

2.2

5

※

A/phas

e

●Operating conditions(Ta= -25～+75℃)
Item Symbol BD6387EFV BD6385EFV BD6383EFV BD6389FM Unit

Supply voltage V
Output current(DC)

※6 Do not however exceed Pd, ASO.

10～28 V

CC0,1,2

I

OUT

6

※

1.7

1.2

6

※

0.7

6

※

1.9

6

※

A/phas

e

●Electrical characteristics

Applicable to all the series (Unless otherwise specified Ta=25℃, Vcc0,1,2=24V)

Item Symbol

Min. Typ. Max.

Limit

Unit Condition

Whole

Circuit current at standby I

- 1.0 3.0 mA PS=L

CCST

Circuit current ICC - 4.5 10 mA PS=H, VREFX=2V

Control input (SELECT, CW_CCW, CLK, PS, MODE0, MODE1, ENABLE)

H level input voltage V
L level input voltage V
H level input current I
L level input current I

2.0 - - V

INH

- - 0.8 V

INL

35 50 85 μA VIN=5V

INH

-10 0 - μA VIN=0V

INL

Output (OUT1A, OUT1B, OUT2A, OUT2B)

I

=±1.5A,

Output ON resistance (BD6387EFV) RON - 0.8 1.04 Ω

Output ON resistance (BD6385EFV) RON - 1.0 1.3 Ω

Output ON resistance (BD6383EFV) RON - 1.5 1.95 Ω

Output ON resistance (BD6389FM) RON - 0.7 0.91 Ω
Output leak current I

- - 10 μA

LEAK

OUT

Sum of upper and lower

=±1.0A,

I

OUT

Sum of upper and lower
I

=±0.5A,

OUT

Sum of upper and lower
I

=±1.7A,

OUT

Sum of upper and lower

Current control

RNFXS input current I
RNFX input current I
VREFX input current I
VREFX input voltage range V
MTHX input current I
MTHX input voltage range V
Comparator threshold V
Minimum on time t

-2.0 -0.2 - μA RNFXS =0V

RNFS

-40 -20 - μA RNFX=0V

RNF

-2.0 -0.1 - μA VREFX=0V

VREF

0 - 2.0 V

REF

-2.0 -0.1 - μA MTHX=0V

MTH

0 - 3.5 V

MTH

0.36 0.4 0.44 V VREFX=2V

CTH

0.3 0.7 1.2 μs R=39kΩ,C=1000pF

ONMIN

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© 2012 ROHM Co., Ltd. All rights reserved.

2/8

2012.02 - Rev.

BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM

A

Technical Note

●Terminal function

1) BD6387EFV / BD6385EFV / BD6383EFV

Pin
No.

Pin name Function Pin

No.

Pin name Function

1 NC Non connection 21 VCC0 Power supply terminal
2 RNF1

Connection terminal of resistor for output
current detection

22 NC

Non connection

3 RNF1S Input terminal of current limit comparator 23 GND Ground terminal
4 NC Non connection 24 MODE0 Motor excitation mode setting terminal
5 OUT1B H bridge output terminal 25 MODE1 Motor excitation mode setting terminal

6 NC Non connection 26 ENABLE Output enable terminal
7 OUT1A H bridge output terminal 27 VREF2 Output current value setting terminal
8 NC Non connection 28 MTH2 Current decay mode setting terminal
9 VCC1 Power supply terminal 29 NC Non connection

10 NC
11 CR1

Non connection
Connection terminal of CR for setting PWM

frequency

30 CR2
31 NC

Connection terminal of CR for setting PWM
frequency

Non connection

12 NC Non connection 32 VCC2 Power supply terminal
13 MTH1 Current decay mode setting terminal 33 NC Non connection
14 VREF1 Output current value setting terminal 34 OUT2A H bridge output terminal
15 SELECT Input mode select terminal 35 NC Non connection
16 CW_CCW Motor rotating direction setting terminal 36 OUT2B H bridge output terminal
17 NC Non connection 37 NC Non connection

18 CLK
19 PS
20 TEST

Clock input terminal
for advancing the electrical angle.

Power save terminal
Terminal for testing

(used by connecting with GND)

38 RNF2S Input terminal of current limit comparator
39 RNF2
40 GND

Connection terminal of resistor for output
current detection

Ground terminal

2) BD6389FM

Pin
No.

Pin name Function Pin

No.

Pin name Function

1 NC Non connection 19 VCC2 Power supply terminal
2 CR1

Connection terminal of CR for setting PWM
frequency

20 NC Non connection

3 MTH1 Current decay mode setting terminal 21 NC Non connection
4 VREF1 Output current value setting terminal 22 OUT2A H bridge output terminal
5 SELECT Input mode select terminal 23 NC Non connection
6 CW_CCW Motor rotating direction setting terminal 24 OUT2B H bridge output terminal

7 CLK

Clock input terminal
for advancing the electrical angle.

25 NC Non connection
8 PS Power save terminal 26 RNF2S Input terminal of current limit comparator
9 TEST

FIN FIN

Terminal for testing
(used by connecting with GND)

Fin terminal
(used by connecting with GND)

27 RNF2

FIN FIN

10 GND Ground terminal 28 RNF1

Connection terminal of resistor for output
current detection

Fin terminal
(used by connecting with GND)

Connection terminal of resistor for output
current detection

11 MODE0 Motor excitation mode setting terminal 29 RNF1S Input terminal of current limit comparator
12 MODE1 Motor excitation mode setting terminal 30 NC Non connection
13 ENABLE Output enable terminal 31 OUT1B H bridge output terminal
14 VREF2 Output current value setting terminal 32 NC Non connection
15 MTH2 Current decay mode setting terminal 33 OUT1A H bridge output terminal

16 CR2
17 NC

18 NC

Connection terminal of CR for setting PWM
frequency

Non connection
Non connection

34 NC Non connection

35 VCC1

36 VCC0

Power supply terminal
Power supply terminal

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© 2012 ROHM Co., Ltd. All rights reserved.

3/8

2012.02 - Rev.