DRV8886AT Datasheet, PDF (10/40 Pages) Texas Instruments – 2-A Stepper Motor Driver With Integrated Current Sense and AutoTune Technology

DRV8886AT
SLVSDO1 – JANUARY 2017
www.ti.com
Typical Characteristics (continued)
Over recommended operating conditions (unless otherwise noted)
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
5
T_A = 40°C
T_A = 25°C
T_A = 125°C
10
15
20
25
30
35
40
Supply Voltage (V)
D007
0.42
0.4
0.38
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.22
0.2
-40 -20
VM = 8 V
VM = 24 V
VM = 37 V
0 20 40 60 80 100 120 140
Ambient Temperature (°C)
D008
3.339
3.336
3.333
3.33
3.327
3.324
3.321
3.318
3.315
3.312
3.309
3.306
3.303
0
Figure 8. Low-Side R_DS(ON) over VM
T _A = 125°C
T _A = 85°C
T _A = 25°C
T _A = -40°C
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
DVDD Load (mA)
D009
Figure 9. Low-Side R_DS(ON) over Temperature
2
TRQ = 0
1
TRQ = Z
0.7
TRQ = 1
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.01
10
20
30 40 50 60 70 100
R _REF (k:)
200
300
D010
Figure 10. DVDD Regulator over Load (VM = 24 V)
Figure 11. Full-Scale Current over RREF Selection
10
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