1/4
STRUCTURE
PRODUCT SERIES
TYPE
FUNCTION
Silicon monolithic integrated circuits
Bipolar stepping motor driver
BD63877EFV
・PWM
constant current controllable two H bridge driver
・Built-in
translator circuit for CLK-IN control
・Full,
Half, and Quarter step modes
・Mix
decay control
○Absolute
maximum ratings(Ta=25℃)
Item
Supply voltage
Limit
Unit
-0.2½+36.0
V
1
W
1.45
※
Power dissipation
Pd
※
2
4.70
W
Input voltage for control pin
V
IN
-0.2½+5.5
V
RNF maximum voltage
V
RNF
0.7
V
※
3
Maximum output current
I
OUT
2.0
A/phase
4
3
Maximum output current(peak)
※
I
OUTPEAK
2.5
※
A/phase
Operating temperature range
T
opr
-25½+85
℃
Storage temperature range
T
stg
-55½+150
℃
Junction temperature
T
jmax
+150
℃
※
1
70mm×70mm×1.6mm glass epoxy board. Derating in done at 11.6mW/℃ for operating above Ta=25℃.
※
2
4-layer recommended board. Derating in done at 37.6mW/℃ for operating above Ta=25℃.
※
3
Do not, however exceed Pd, ASO and Tjmax=150℃.
※
4
Pulse width tw≦1ms, duty 20%.
Symbol
V
CC1,2
○Recommended
operating conditions (Ta=-25½+85℃)
Item
Symbol
Min.
Supply voltage
V
CC1,2
19
Output current
I
OUT
-
5
※
Do not, however exceed Pd, ASO.
This product isn’t designed for protection against radioactive rays.
Typ.
24
1.5
Max.
28
1.7
※
5
Unit
V
A/phase
.
Status of this document
The Japanese version of this document is the formal specification.
A customer may use this translation version only for a reference to help reading the formal version.
If there are any differences in translation version of this document, formal version takes priority.
Rev. A
2/4
○Electrical
characteristics (Unless otherwise specified, Ta=25℃, V
CC1,2
=24V)
Item
Symbol
Min.
Limit
Typ.
Max.
2.5
5.0
-
0.8
100
-
Unit
Conditions
Whole
Circuit current at standby
I
CCST
-
1.0
Circuit current
I
CC
-
2.5
Control input (CLK, CW_CCW, MODE0, MODE1, ENABLE, PS)
H level input voltage
V
INH
2.0
-
L level input voltage
V
INL
-
-
H level input current
I
INH
35
50
L level input current
I
INL
-10
0
Output (OUT1A, OUT1B, OUT2A, OUT2B)
Output ON resistance
Output leak current
Current control
RNFXS input current
RNFX input current
VREF input current
VREF input voltage range
MTH input current
MTH input voltage range
Comparator threshold
Minimum on time (Blank time)
R
ON
I
LEAK
I
RNFS
I
RNF
I
VREF
V
REF
I
MTH
V
MTH
V
CTH
t
ONMIN
-
-
-2.0
-40
-2.0
0
-2.0
0
0.57
0.3
0.65
-
-0.1
-20
-0.1
-
-0.1
-
0.60
0.8
mA
mA
V
V
μA
μA
PS=L
PS=H, VREF=3V
V
IN
=5V
V
IN
=0V
I
OUT
=1.5A,
Sum of upper and lower
0.85
10
-
-
-
3.0
-
3.5
0.63
1.5
Ω
μA
μA
μA
μA
V
μA
V
V
μs
RNFXS=0V
RNFX=0V
VREF=0V
MTH=0V
VREF=3V
C=1000pF, R=39kΩ
Rev. A
3/4
○Package
outline
Product No.
BD63877EFV
Lot No.
HTSSOP-B28 (Unit:mm)
○Block
diagram
○Pin
No. / Pin name
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin name
GND
OUT1B
RNF1
RNF1S
OUT1A
NC
VCC1
NC
GND
CR
NC
MTH
VREF
PS
Pin No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pin name
CLK
CW_CCW
TEST
MODE0
MODE1
ENABLE
NC
VCC2
NC
OUT2A
RNF2S
RNF2
OUT2B
NC
CLK
15
CW_CCW
16
MODE0
18
MODE1
19
ENABLE
20
Translator
RESET
Regulator
9
GND
14
PS
UVLO
OVLO
TSD
VREF
13
＋
－
2bit DAC
OCP
7
VCC1
RNF1S
4
＋
－
5
OUT1A
2
OUT1B
Control logic
RNF2S
25
＋
－
3
RNF1
Blank time
PWM control
CR
10
OSC
Mix decay
control
Predriver
22
VCC2
24
OUT2A
27
OUT2B
26
RNF2
NC : Non Connection
MTH
12
TEST
17
1
GND
Rev. A
4/4
○Operation
Notes
(1) Absolute maximum ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating
conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a
short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings,
consider adding circuit protection devices, such as fuses.
(2) Power supply lines
As return of current regenerated by back EMF of motor happens, take steps such as putting capacitor
between power supply and GND as an electric pathway for the regenerated current. Be sure that there is no
problem with each property such as emptied capacity at lower temperature regarding electrolytic capacitor
to decide capacity value. If the connected power supply does not have sufficient current absorption capacity,
regenerative current will cause the voltage on the power supply line to rise, which combined with the
product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to
implement a physical safety measure such as the insertion of a voltage clamp diode between the power
supply and GND pins.
(3) GND potential
The potential of GND pin must be minimum potential in all operating conditions.
(4) Metal on the backside (Define the side where product markings are printed as front)
The metal on the backside is shorted with the backside of IC chip therefore it should be connected to GND.
Be aware that there is a possibility of malfunction or destruction if it is shorted with any potential other than
GND.
(5) Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual
operating conditions. This IC exposes its frame of the backside of package. Note that this part is assumed
to use after providing heat dissipation treatment to improve heat dissipation efficiency . Try to occupy as
wide as possible with heat dissipation pattern not only on the board surface but also the backside.
(6) Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the
IC to malfunction.
(7) ASO
When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO.
(8) Thermal shutdown circuit
The IC has a built-in thermal shutdown circuit (TSD circuit). If the chip temperature becomes Tjmax=150℃,
and higher, coil output to the motor will be open. The TSD circuit is designed only to shut the IC off to
prevent runaway thermal operation. It is not designed to protect or indemnify peripheral equipment. Do not
use the TSD function to protect peripheral equipment.
(9) Ground Wiring Pattern
When using both large current and small signal GND patterns, it is recommended to isolate the two ground
patterns, placing a single ground point at the ground potential of application so that the pattern wiring
resistance and voltage variations caused by large currents do not cause variations in the small signal
ground voltage. Be careful not to change the GND wiring pattern of any external components, either.
(10) TEST pin
Be sure to connect TEST pin to GND.
Rev. A
Appendix
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM
CO.,LTD.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you
wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM
upon request.
Examples of application circuits, circuit constants and any other information contained herein illustrate the
standard usage and operations of the Products. The peripheral conditions must be taken into account when
designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document. However, should
you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no respon-
sibility for such damage.
The technical information specified herein is intended only to show the typical functions of and examples of
application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or
exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility
whatsoever for any dispute arising from the use of such technical information.
The Products specified in this document are intended to be used with general-use electronic equipment or
devices (such as audio visual equipment, office-automation equipment, communication devices, electronic
appliances and amusement devices).
The Products are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or
malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard against the
possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as
derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your
use of any Product outside of the prescribed scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or system
which requires an extremely high level of reliability the failure or malfunction of which may result in a direct
threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment,
aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no
responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended
to be used for any such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may be controlled under
the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
ROHM
Customer Support System
www.rohm.com
Copyright ©
2008 ROHM CO.,LTD.
THE AMERICAS
/
EUROPE
/
ASIA
/
JAPAN
Contact us
:
webmaster@ rohm.co. jp
21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan
TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev3.0
京公网安备 11010802033920号
EEWORLD
