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PDF BD6389FM Data sheet ( Hoja de datos )
| Número de pieza | BD6389FM | |
| Descripción | Bipolar stepping motor driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Stepping Motor Driver series
High Performance, High Reliability
36V Stepping Motor Driver Series
BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM
No.12009EAT04
●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, sewing machine, photo
printer, FAX, scanner, mini printer, toy, and robot etc.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
1/8
2012.02 - Rev.A
1 page  
BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM
Technical Note
○PS／Power save terminal
PS can make circuit standby state and make motor output OPEN. In standby state, translator circuit is reset (initialized)
and electrical angle is initialized.
Please be careful because there is a delay of 40μs(max.) before it is returned from standby state to normal state and
the motor output becomes ACTIVE.
PS State
L Standby state (RESET)
H ACTIVE
The electrical angle (initial electrical angle) of each excitation mode immediately after RESET is as follows.
Please be careful because the initial state at the time of FULL STEP is different from those of other excitation modes.
Excitation mode Initial electrical angle
FULL STEP
HALFSTEP A
HALFSTEP B
QUARTER
STEP
45°
0°
0°
0°
○SELECT Terminal／Input mode switching terminal
This is the terminal to set the input mode.
SELECT
Input mode
L CLK-IN drive
H Parallel IN drive
●Power dissipation
○HTSSOP-B40 Package (BD6387EFV/BD6385EFV/BD6383EFV)
HTSSOP-B40 has exposed metal on the back, and it is possible to dissipate heat from a through hole in the back. Also, the
back of board as well as the surfaces has large areas of copper foil heat dissipation patterns, greatly increasing power
dissipation. The back metal is shorted with the back side of the IC chip, being a GND potential, therefore there is a
possibility for malfunction if it is shorted with any potential other than GND, which should be avoided. Also, it is
recommended that the back metal is soldered onto the GND to short. Please note that it has been assumed that this
product will be used in the condition of this back metal performed heat dissipation treatment for increasing heat dissipation
efficiency.
5.0
4.7W 4
4.0
3.6W 3
3.0
Measurement machine：TH156（Kuwano Electric）
Measurement condition：ROHM board
Board size：70*70*1.6mm3
(With through holes on the board)
The exposed metal of the backside is connected to the board with
solder.
Board①：1-layer board(Copper foil on the back 0mm2)
Board②：2-layer board(Copper foil on the back 15*15mm2)
Board③：2-layer board(Copper foil on the back 70*70mm2)
Board④：4-layer board(Copper foil on the back 70*70mm2)
2.0 1.95W 2
1.6W 1
1.0
Board①：θja=78.1℃/W
Board②：θja=64.1℃/W
Board③：θja=34.7℃/W
Board④：θja=26.6℃/W
0
100 125
Ambient Temperature:Ta[℃]
Fig.2 HTSSOP-B40 Derating Curve
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
5/8
2012.02 - Rev.A
5 Page 
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.001
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet BD6389FM.PDF ] | |
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