PBL 3775/1
M
B1 1
NC
1
MB
1
2
E
1
3
MA
1
4
VMM
1
5
GND
6
GND
7
VR
1
8
C
1
9
Phase
1
10
Dis
1
11
RC
12
24
NC
23
MB
2
22
E
2
21
MA
2
V
MM2
GND
GND
GND
GND
22
M
B2
21
E
2
20
M
A2
19
V
MM2
18
GND
M
A2 5
E
2 6
M
B2 7
M
B1 8
V
R2
27
28
M
A1 3
V
MM1 4
GND
5
GND
6
V
R1 7
C
1 8
Phase
1 9
Dis
1 10
RC
11
26
4
3
2
1
E
1 2
C
2
25
24
23
Phase
2
Dis
2
V
CC
RC
Dis
1
Phase
1
C
1
PBL
3775/1SO
20
VMM
2
19
GND
18
GND
PBL
3775/1N
17
GND
16
V
R2
15
C
2
PBL 3775/1QN
22
21
20
19
GND
9
E
1 10
M
A1 11
17
VR
2
16
Dis
2
15
Phase
2
14
C
2
13
V
cc
V
MM1 12
GND
13
GND
14
GND
15
GND
16
GND
17
14
Phase
2
13
Dis
2
12
V
CC
Figure 4. Pin configuration.
Pin Description
SO
DIP
PLCC
Symbol
Description
2
3
4
5
6,7
18,19
8
9
10
11
12
13
14
15
16
17
20
21
22
23
1,24
1
2
3
4
5, 6,
17, 18
7
8
9
10
11
12
13
14
15
16
19
20
21
22
[8]
[10]
[11]
[12]
[1-3, 9,
13-17,
28]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[4]
[5]
[6]
[7]
M
B1
E
1
M
A1
V
MM1
GND
V
R1
C
1
Dis
1
RC
V
CC
Dis
2
C
2
V
R2
V
MM2
M
A2
E
2
M
B2
NC
Motor output B, channel 1. Motor current flows from M
A1
to M
B1
when Phase
1
is HIGH.
Common emitter, channel 1. This pin connects to a sensing resistor R
S
to ground.
Motor output A, channel 1. Motor current flows from M
A1
to M
B1
when Phase
1
is HIGH.
Motor supply voltage, channel 1, +10 to +40 V. V
MM1
and V
MM2
should be connected together.
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.
Phase
1
Controls the direction of motor current at outputs M
A1
and M
B1
. Motor current
flows from M
A1
to M
B1
when Phase
1
is HIGH.
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
CC
and a 4 700 pF capacitor to ground
to obtain 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.
Phase
2
Controls the direction of motor current at outputs M
A2
and M
B2
. Motor current
flows from M
A2
to M
B2
when Phase
2
is HIGH.
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
MM1
and V
MM2
should be connected together.
Motor output A, channel 2. Motor current flows from M
A2
to M
B2
when Phase
2
is HIGH.
Common emitter, channel 2. This pin connects to a sensing resistor R
S
to ground.
Motor output B, channel 2. Motor current flows from M
A2
to M
B2
when Phase
2
is HIGH.
SO pin 1 & 24 is "Not Connected"
4
V
R1 18
ERICSSON [ ERICSSON ]
