A3955SLB-T Allegro Microsystems Inc, A3955SLB-T Datasheet - Page 12

• Manufacturer Part Number: A3955SLB-T
• Description: IC MOTOR DRIVER PWM FULL 16-SOIC
• Manufacturer: Allegro Microsystems Inc

Specifications of A3955SLB-T

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±1.5A
• Voltage - Load: 4.5 V ~ 50 V
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Motor Type: Full Bridge
• No. Of Outputs: 2
• Output Current: 1.5A
• Output Voltage: 50V
• Supply Voltage Range: 4.5V To 5.5V
• Driver Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -20°C To
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1068

A3955
Step
Full
1
2
3
4
Step
Half
1
2
3
4
5
6
7
8
Quarter Eighth
Step
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
Step
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
Full-Bridge PWM Microstepping Motor Driver
PHASE
H
H
H
H
X
X
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
A
Table 4 — Step Sequencing
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
2A
Bridge A
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
1A
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
0A
-19.5%
-38.2%
-55.5%
-70.7%
-83.1%
-92.4%
-92.4%
-83.1%
-70.7%
-55.5%
-38.2%
-19.5%
70.7%
55.5%
38.2%
19.5%
-100%
-100%
-100%
19.5%
38.2%
55.5%
70.7%
83.1%
92.4%
92.4%
83.1%
I
100%
100%
100%
LOADA
0%
0%
PHASE
H
H
H
H
H
H
H
H
H
H
H
H
X
X
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
B
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
2B
Bridge B
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
1B
D
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
0B
-19.5%
-38.2%
-55.5%
-70.7%
-83.1%
-92.4%
-92.4%
-83.1%
-70.7%
-55.5%
-38.2%
-19.5%
70.7%
83.1%
92.4%
92.4%
83.1%
70.7%
55.5%
38.2%
19.5%
-100%
-100%
-100%
19.5%
38.2%
55.5%
I
100%
100%
100%
LOADB
0%
0%
11