njm13775 New Japan Radio Co.,Ltd, njm13775 Datasheet - Page 2

• Manufacturer Part Number: njm13775
• Description: Dual Stepper Motor Driver
• Manufacturer: New Japan Radio Co.,Ltd

NJM13775
16,17,18,19,20,24,37,
41,42,43,44,45
1,2,6,8,10,12,15,21,23,
26,28,30,31,33,35,38,
40,46
- 2 -
PIN CONFIGURATION
PIN DESCRIPTION
PIN #
32
34
36
39
47
48
11
13
14
22
25
27
29
3
4
5
7
9
Symbol
Phase
Phase
GND
V
V
Dis
Dis
M
M
V
M
M
V
RC
V
NC
E
C
C
E
MM1
MM2
CC
R1
R2
B1
A1
A2
B2
1
2
1
2
1
2
1
2
Motor output B, channel 1. Motor current flows from M
Common emitter, channel 1. This pin connects to a sensing resistor R
Motor output A, channel 1. Motor current flows from M
Motor supply voltage, channel 1, +10 to +40 V. V
Ground and negative supply. Note: these pins are used thermally for heat-sinking.
Make sure that all ground pins are soldered onto a suitably large copper ground plane for efficient heat
sinking.
Reference voltage, channel 1. Controls the comparator threshold voltage and hence the output current.
Comparator input channel 1. This input senses the instantaneous voltage across the sensing resistor,
filtered by the internal digital filter or an optional external RC network.
Controls the direction of motor current at outputs M
when Phase
Disable input for channel 1. When HIGH, all four output transistors are turned off, which results in a
rapidly decreasing output current to zero.
Clock oscillator RC pin. Connect a 12 kohm resistor to V
the nominal switching frequency of 23.0 kHz and a digital filter blanking time of 1.0µs.
Logic voltage supply, nominally +5 V.
Disable input for channel 2. When HIGH, all four output transistors are turned off, which results in a
rapidly decreasing output current to zero.
Controls the direction of motor current at outputs M
when Phase
Comparator input channel 2. This input senses the instantaneous voltage across the sensing resistor,
filtered by the internal digital filter or an optional external RC network.
Reference voltage, channel 2. Controls the comparator threshold voltage and hence the output current.
Motor supply voltage, channel 2, +10 to +40 V. V
Motor output A, channel 2. Motor current flows from M
Common emitter, channel 2. This pin connects to a sensing resistor R
Motor output B, channel 2. Motor current flows from M
No connection.
GND
V
GND
GND
GND
GND
GND
V
NC
MM1
NC
NC
C
R1
1
37
38
39
40
41
42
43
44
45
46
47
48
1
2
is HIGH.
is HIGH.
Figure 2. Pin configurations
Description
MM1
MM1
and V
and V
A1
A2
A1
A1
A2
A2
and M
and M
to M
CC
to M
to M
to M
MM2
MM2
24
23
22
21
20
19
18
17
16
15
14
13
and a 4 700 pF capacitor to ground to obtain
B1
B1
B2
B2
should be connected together.
should be connected together.
B1
B2
when Phase
when Phase
when Phase
when Phase
GND
NC
V
NC
GND
GND
GND
GND
GND
NC
V
C
. Motor current flows from M
. Motor current flows from M
MM2
R2
2
S
S
to ground.
to ground.
1
2
1
2
is HIGH.
is HIGH.
is HIGH.
is HIGH.
A1
A2
to M
to M
B1
B2