2-Phase Stepper Motor Bipolar Driver IC (2-Phase/1-2 Phase/W1-2 Phase Excitation)
UDN2917EB
sInternal
Block Diagram
(1/2 Circuit)
V
BB
sTruth
Table
ENABLE
L
L
H
X=Don't Care
PHASE
H
L
X
Z=High impedance
OUT
A
H
L
Z
OUT
B
L
H
Z
OUT
B
OUT
A
V
REF
20 k
Ω
E
I
0
L
SENSE
R
C
R
S
C
C
R
T
C
T
I
1
L
L
H
H
Output Current
V
REF
/
(10×R
S
)=I
TRIP
V
REF
/
(15×R
S
)=I
TRIP
×2/3
V
REF
/
(30×R
S
)=I
TRIP
×1/3
0
÷
10
40 k
Ω
I
0
I
1
10 k
Ω
−
+
ONE
SHOT
RC
SOURCE
DISABLE
H
L
H
sApplication
Circuit
V
CC
39
38
37
36
35
34
33
32
31
30
29
C
t
R
t
Digital control signal
40
41
C
t
R
t
28
V
CC
PWM 2
EN
2
27
ENABLE
2
PHASE
2
V
REF2
ENABLE
1
PHASE
1
V
REF1
I
11
I
01
C
C
R
C
42
43
44
1
2
3
4
EN
1
PWM 1
θ
2
26
25
24
23
θ
1
I
12
I
02
C
VBB
+
C
C
R
C
V
BB
1
2
22
21
20
19
18
V
BB
R
S
5
6
R
S
Digital control signal
qOff-time
setting
t
off
≅C
T
R
T
R
S
:
V
REF
:
R
T
:
C
T
:
R
C
:
C
C
:
C
VBB
:
0.82Ω, 1W (0.5 to 1.0Ω, 2 to 1W)
5.0V (1.5 to 7.5V)
56kΩ (20k to 100kΩ)
470pF (200 to 500pF)
1kΩ
3,300pF (470 to 10,000pF)
100
µ
F
10
11
12
13
14
15
16
17
7
8
9
STEPPER
MOTOR
sExternal
Dimensions
Plastic PLCC
ICs per stick
(Unit: mm)
27
0.812
0.661
0.533
0.331
17.65
17.40
16.66
16.51
INDEX AREA
1.27
BSC
44
0.51
MIN
4.57
4.19
1
16.66
16.51
17.65
17.40
2
qAllowable
variation in distance between leads is not cumulative.
Note 1: Web type leads are internally connected together.
UDN2917EB
85