PBL 3775/1
M
M
1
2
22
21
20
19
M
E
B1
B2
E
1
2
NC
1
2
3
4
5
NC
MB2
E2
24
23
M
V
3
MB1
E1
A1
A2
M
5
6
25
Phase
A2
2
22
21
20
V
4
MM1
MM2
E
24 Dis
2
2
MA2
MA1
VMM1
GND
M
M
7
23
22
21
V
B2
B1
CC
GND
GND
5
18 GND
17 GND
VMM2
GND
8
RC
Dis
PBL
3775/1SO
PBL 3775/1QN
PBL
3775/1N
6
7
19
18
6
GND
9
1
GND
VR1
GND
VR2
Dis2
E
1
10
11
20 Phase
1
V
R1
V
7
16
15
14
13
12
R2
17
16
15
14
13
8
9
19
C
1
M
A1
C
1
8
C
C1
2
10
11
12
Phase2
C2
Phase1
Phase
1
Phase
9
2
Dis1
RC
Dis
1
Dis
2
10
11
Vcc
RC
V
CC
Figure 4. Pin configuration.
Pin Description
SO
DIP
PLCC
Symbol
Description
2
3
4
5
1
2
3
4
[8]
MB1
E1
MA1
VMM1
GND
Motor output B, channel 1. Motor current flows from MA1 to MB1 when Phase1 is HIGH.
Common emitter, channel 1. This pin connects to a sensing resistor RS to ground.
Motor output A, channel 1. Motor current flows from MA1 to MB1 when Phase1 is HIGH.
Motor supply voltage, channel 1, +10 to +40 V. VMM1 and VMM2 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.
[10]
[11]
[12]
6,7
5, 6, [1-3, 9,
18,19 17, 18 13-17,
28]
8
7
[18]
[19]
[20]
[21]
[22]
VR1
C1
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.
Phase1 Controls the direction of motor current at outputs MA1 and MB1. Motor current
flows from MA1 to MB1 when Phase1 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 VCC 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.
9
8
10
11
12
9
10
11
Dis1
RC
13
14
12
13
[23]
[24]
VCC
Dis2
Disable input for channel 2. When HIGH, all four output transistors are turned off, which results
in a rapidly decreasing output current to zero.
15
16
17
14
15
16
[25]
[26]
[27]
Phase2 Controls the direction of motor current at outputs MA2 and MB2. Motor current
flows from MA2 to MB2 when Phase2 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.
C2
VR2
20
21
22
23
19
20
21
22
[4]
[5]
[6]
[7]
VMM2
MA2
E2
MB2
NC
Motor supply voltage, channel 2, +10 to +40 V. VMM1 and VMM2 should be connected together.
Motor output A, channel 2. Motor current flows from MA2 to MB2 when Phase2 is HIGH.
Common emitter, channel 2. This pin connects to a sensing resistor RS to ground.
Motor output B, channel 2. Motor current flows from MA2 to MB2 when Phase2 is HIGH.
SO pin 1 & 24 is "Not Connected"
1,24
4
ERICSSON [ ERICSSON ]
