NJM#3771E3-TE2 NJR, NJM#3771E3-TE2 Datasheet - Page 6
NJM#3771E3-TE2
Manufacturer Part Number
NJM#3771E3-TE2
Description
Motor / Motion / Ignition Controllers & Drivers Dual Stepper Motor Lead Free Package
Manufacturer
NJR
Type
Dual Stepper Motor Controllerr
Datasheet
1.NJM3771FM2.pdf
(9 pages)
Specifications of NJM#3771E3-TE2
Product
Stepper Motor Controllers / Drivers
Operating Supply Voltage
5 V
Supply Current
50 mA
Mounting Style
SMD/SMT
Package / Case
EMP-24
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Current control
The output current to the motor winding is mainly determined by the voltage at the reference input and the value of
the sensing resistor, R
Fast current decay setting will produce somewhat lower (average) current than slow current decay. The peak
current through the sensing resistor (and motor winding) can be expressed as:
i.e., with a recommended value of 1 ohm for the sensing resistor, R
output current of approximately 450 mA. To improve noise immunity on the V
increased to
5 volts if R
Chopping frequency, winding inductance, and supply voltage will affect the current level, but to much less extent.
I
M,peak
APPLICATIONS INFORMATION
= 0.18 • (V
S
Figure 7. Microstepping system with NJU39610 and NJM3771
is correspondingly changed to 2 ohms.
To
+2.5V
P
R
GND
(V
V
/ R
CC
CC
14
15
16
17
22
S
Figure 6. Typical stepper motor application with NJM3771
)
S
7
6
1
(+5 V)
.
) [A]
D0
D7
A0
A1
WR
CS
RESET
V
Ref
+5 V
NJU 39610
GND
(V
V
15 k
3 300 pF
CC
CC
16
15
14
7
8
9
V
V DD
)
(+5 V)
SS
12
5
Phase
CD
V
Phase
CD
V
18
RC
R1
R2
0.1 F
1
2
5,
17, 18
GND
1
2
V
6,
Sign
Sign
CC
CD
DA
CD
DA
11
1
1
1
2
2
2
NJM 3771
C
1
10
820 pF
19
3
20
4
2
21
1 k
+5 V
1.0
V
MM1
2
3
E
15 k
3 300 pF
1
16
15
14
7
8
9
R S
13
12
C
Phase
CD
V
Phase
CD
V
RC
R1
V
R2
2
0.1 F
1
820 pF
2
MM2
5,
17, 18
GND
20
1 k
1
1.0
2
V
6,
CC
M
M
M
M
21
11
E
A1
B1
A2
B2
NJM 3771
2
C
0.1 F
1
10
R S
820 pF
S
4
1
19
22
1 k
1.0
, a 2.5 V reference voltage will produce an
V
MM1
3
2
E
Pin numbers refer
to DIP package.
1
GND (V
R S
+
13
10 F
STEPPER
C
MOTOR
V
2
820 pF
MM2
V
R
20
1 k
MM
MM
1.0
input, the control range may be
)
21
M
M
M
M
E
A1
B1
A2
B2
2
0.1 F
R S
4
1
19
22
Pin numbers refer
to DIP package.
GND (V
+
10 F
STEPPER
MOTOR
V
MM
MM
)
NJM3771