DRV8809 Datasheet, PDF (27/44 Pages) Texas Instruments – COMBINATION MOTOR DRIVERS WITH DC-DC CONVERTERS

DRV8809
DRV8810
www.ti.com ............................................................................................................................................................... SLVS854A – JULY 2008 – REVISED JULY 2008
Table 13. Angular Rotation Setting for Stepping Motor Driver (Parameter Bit in Stepper Register)
STEP
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SET
ANGLE
(deg)
90
84.4
78.8
73.1
67.5
61.2
56.3
50.6
45
39.4
33.8
28.1
22.5
16.9
11.3
5.6
0
BIT 14
CURRENT
A
(C) 3
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
BIT 13
CURRENT
A
(C) 2
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
BIT 12
CURRENT
A
(C) 1
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
BIT 11
CURRENT
A
(C) 0
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
BIT 7
CURRENT
B
(D) 3
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
BIT 6
CURRENT
B
(D) 2
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
H
BIT 5
CURRENT
B
(D) 1
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
H
BIT 4
CURRENT
B
(D) 0
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
H
RdsON vs Idrain
1.0
T_J = 120°C
0.9
0.8
0.7
T_J = 70°C
0.6
0.5
T_J = 25°C
0.4
0.5
1
1.5
2
2.5
3
3.5
Idrain (A)
A. This plot includes both actual device characterization data and extrapolated data.
B. Actual device has self-heating effect to increase the junction temperature, with continuous loading current more than
1 A.
C. The device temperature is set to 70°C for the R_ds(ON) test.
Figure 19. Typical R_ds(ON) Value vs Drain Current (DMOS FET in H-Bridge)
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