NJU7384
Pulse Input Bipolar Stepper Motor Driver
s
PACKAGE OUTLINE
s
GENERAL DESCRIPTION
NJU7384 is a bipolar drive stepping motor driver.
The control method used is a simple pulse train input control
(STEP & DIR) method of programming. Also, low power
consumption was realized as a result of the adoption of a highly
efficient CMOS.
As the control functions, the external input RESET and ENABLE
functions are used, and as the protective function, a thermal
shutdown (TSD) is incorporated.
The package uses the low thermal resistance SSOP32 which
NJU7384V
can withstand a high output current.
s
FEATURES
•
Operating Voltage
3.0 to 5.5V（Logic : V
DD
）
4.0 to 8.0V（H bridge : V
MM
）
•
Maximum Output Current
700mA/ch
•
Pulse Input (STEP＆DIR) Control
•
Half / Full Step Change Function
•
Thermal Shutdown Circuit
•
Thermal Shutdown Alarm Output
•
RESET Function
•
ENABLE Function
•
CMOS Technology
•
Package Outline
SSOP32
s
BLOCK DIAGLAM
V
DD
V
MM1
GATE DRIVE
STEP
OUTA1
OUTA2
DIR
CONTROL LOGIC
TRANSLATOR
PGNG1
V
MM2
GATE DRIVE
HSM
RESET
OUTB1
OUTB2
ENABLE
PGND2
GND
TSD
TSD
ALARM
Ver.2007-08-20
-1-
NJU7384
s
PIN FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1. NC
2. NC
3. NC
4. V
DD
5. NC
6. STEP
7. DIR
8. HSM
9. RESET
10. ENABLE
11. TSD ALARM
12. NC
13. GND
14. NC
15. NC
16. NC
32. V
MM1
31. V
MM1
30. OUTA1
29. OUTA1
28. OUTA2
27. OUTA2
26. PGND1
25. PGND1
24. PGND2
23. PGND2
22. OUTB2
21. OUTB2
20. OUTB1
19. OUTB1
18. V
MM2
17. V
MM2
s
PIN DESCRIPTION
PIN No.
1,2,3
4
5
6
7
8
9
10
11
12
13
14,15,16
17,18
19,20
21,22
23,24
25,26
27,28
29,30
31,32
SYMBOL
NC
V
DD
NC
STEP
DIR
HSM
RESET
ENABLE
TSD
ALARM
NC
GND
NC
V
MM2
OUTB1
OUTB2
PGND2
PGND1
OUTA2
OUTA1
V
MM1
FUNCTION
Non connection pins
Logic Power-Supply input pin
Non connection pin
Pulse signal input pin for motor
rotation control pin
Forward / Reverse rotation control
Full / Half step mode control pin
Phase initialize signal input pin
NOTE
-
-
-
1 pulse input
⇒
1 clock motion
“H”= Forward (CW), ”L”= Reverse (CCW)
“H”= Full step, ”L”= Half step
“H”= Normal operation,
”L”= Phase initialize
Output signal all off control signal “H”= Normal operation,
input pin
”L”= Output all off
TSD alarm output pin
TSD operating =”L” signal output
-
-
-
Connect to motor power-supply
-
-
-
-
-
-
Connect to motor power-supply
Non connection pins
Logic ground (GND) pin
Non connection pins
H bridge power-supply pins
Output pin B1
Output pin B2
H bridge ground (GND) pin
H bridge ground (GND) pin
Output pin A2
Output pin A1
H bridge power-supply pins
* Short all logic ground terminals and the H bridge ground terminal externally.
* Short all H bridge power supply voltage terminals externally.
* Fix the potential of unused logic input terminals externally.
-2-
Ver.2007-08-20
NJU7384
s
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Logic Power Supply Voltage
H Bridge Power Supply Voltage
Logic Input Voltage
Motor Output Current (Max)
Logic Input Current
Operating Temperature Range
Operating Junction Temperature Range
Storage Temperature Rnage
Power Dissipation
*1)
: VDD
≤
VMM
*2)
: EIAJ/JEDEC STD 2 Layer substrate
(Ta=25°C)
RATINGS
+7.0
+9.0
-0.3
~
V
DD
700
10
-40
~
+85
-40
~
+150
-50
~
+150
1175
SYMBOL(unit)
V
DD
(V)
V
MM
(V)
V
ID
(V)
I
OPEAK
(mA/ch)
I
IPEAK
(mA)
Topr (°C)
Tj(°C)
Tstg(°C)
P
D
(mW)
NOTE
*1)
-
-
-
-
-
-
-
*2)
s
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN.
Logic Power Supply Voltage
3.0
V
DD
Range
H Bridge Power Supply
4.0
V
MM
Voltage Range
Logic H Input Voltage
Logic L Input Voltage
STEP-ON Time
STEP-OFF Time
Data Setup Time
Hold Time
Input Clock Frequency
V
IH
V
IL
t
ONMIN
t
OFFMIN
t
DS
t
DH
f
CLK
3.5
0
10
10
1
1
-
TYP.
5.0
6.0
-
-
-
-
-
-
-
MAX.
5.5
8.0
V
DD
1.2
-
-
-
-
50
UNIT
V
V
V
V
µs
µs
µs
µs
kHz
(Ta=25°C)
NOTE
V
DD
≤
V
MM
-
V
DD
=5.0V,
No load
Ver.2007-08-20
-3-
NJU7384
s
ELECTRICAL CHARACTERISTICS
PARAMETER
■General
I
DD
Operating Current
I
MM
Thermal Shutdown
Operating Temperature
Thermal Shutdown
Hysteresis
T
TSD
T
HYS
STEP, DIR, HSM, RESET,
ENABLE=”5V”, No Load,
V
DD
Meas.
STEP, DIR, HSM, RESET,
ENABLE=”5V”, No load,
V
MM
Meas.
-
-
-
-
-
-
0.3
0.3
180
30
0.6
0.6
-
-
mA
mA
°C
°C
SYMBOL
CONDITION
MIN.
(Ta=25°C, V
DD
=5V, V
MM
=6V)
TYP.
MAX.
UNIT
■Input
(STEP, DIR, HSM, ENABLE, RESET Terminals)
Logic Input Current
■H
Bridge (Output)
H Output Voltage
L Output Voltage
Upper Side Output ON
Resistance
Under Side Output ON
Resistance
Output Leak Current
■Signal
Output
TSD Alarm L Output
Voltage
TSD Pull-up Resistance
V
TSD
R
TSD
No external pull-up resistance
I
IH
I
IL
STEP, DIR, HSM, ENABLE,
RESET =”5V”
STEP, DIR, HSM, ENABLE,
RESET =”0V”
-
-1
-
-
1
-
µA
µA
V
OH
V
OL
R
OH
R
OL
I
O LEAK
Io=+400mA
Io= -400mA
Io=400mA
Io=400mA
-
5.5
-
-
-
-
5.7
0.2
0.75
0.50
1.0
-
0.4
1.25
1.00
-
V
V
Ω
Ω
µA
-
-
-
10
0.3
-
V
kΩ
-
-4-
Ver.2007-08-20
NJU7384
s
TIMING CONDITION
t
ONMIN
t
OFFMIN
STEP
50%
t
DS
DIR,HSM,
RESET,
ENABLE
t
DH
s
TRUTH TABLE
LOGIC IN
V
DD
DIR
HSM
RESET
ENABLE
H
L
H
L
H
L
H
L
H
L
MODE
OPERATE
Hi Z
CW
CCW
FULL STEP
HALF STEP
OPERATE
RESET
OPERATE
Hi Z
*V
MM
: Motor voltage supply
*OPERATE : Follow the input logic
*Hi Z : Output all off (A1, A2, B1,B2)
s
EXCITATION SEQUENCE
Condition: FULL STEP, HSM=ENABLE=RESET
0
1
2
3
Pulse
OUTA1
L
H
H
L
OUTA2
H
L
L
H
OUTB1
L
L
H
H
OUTB2
H
H
L
L
IA
-
+
+
-
IB
-
-
+
+
DIR=HIGH CW
DIR=LOW CCW
Condition: HALF STEP, HSM=LOW, ENABLE=RESET=HIGH
Pulse
OUTA1
OUTA2
OUTB1
OUTB2
IA
IB
DIR=HIGH
DIR=LOW
0
L
H
L
H
-
-
CW
CCW
1
Hi Z
Hi Z
L
H
0
-
2
H
L
L
H
+
-
3
H
L
Hi Z
Hi Z
+
0
4
H
L
H
L
+
+
5
Hi Z
Hi Z
H
L
0
+
6
L
H
H
L
-
+
7
L
H
Hi Z
Hi Z
-
0
* Regarding the current flow direction, the direction A1→A2 and B1→B2 is indicated as +, and the direction A2→A1 and
B2→B1 is indicated as –.
Ver.2007-08-20
-5-
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