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| DRV8846_15 Datasheet, PDF (7/35 Pages) Texas Instruments – DRV8846 Dual H-Bridge Stepper Motor Driver | |||
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www.ti.com
Electrical Characteristics (continued)
TA = 25°C, over recommended operating conditions unless otherwise noted
PARAMETER
TEST CONDITIONS
TOFF_SEL = GND
tOFF
Current control constant off time
TOFF_SEL = Hi-Z
TOFF_SEL = VINT
PROTECTION CIRCUITS
VUVLO VM undervoltage lockout
VM falling; UVLO report
VM rising; UVLO recovery
IOCP
tOCP
tRETRY
TTSD
THYS
Overcurrent protection trip level
Overcurrent deglitch time
Overcurrent protection period
Thermal shutdown temperature
Thermal shutdown hysteresis
Die temperature TJ
Die temperature TJ
7.6 Timing Requirements
TA = 25°C, over recommended operating conditions unless otherwise noted
NO.
PARAMETER
1
ÆSTEP
2
tWH(STEP)
3
tWL(STEP)
4
tSU(STEP)
5
tH(STEP)
Step frequency
Pulse duration, STEP high
Pulse duration, STEP low
Setup time, DIR or Mx to STEP rising
Hold time, DIR or Mx to STEP rising
1
2
3
STEP
DIR, M0, M1
45
Figure 1. Timing Diagram
DRV8846
SLLSEK2 â JUNE 2014
MIN TYP MAX UNIT
20
10
μs
30
2.9
V
3
2
A
2.8
μs
1.6
ms
150
160
180 °C
50
°C
MIN
MAX
UNIT
250
kHz
1.9
μs
1.9
μs
200
ns
200
ns
Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: DRV8846
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