DRV8824_16 Datasheet, PDF (7/35 Pages) Texas Instruments – Stepper Motor Controller IC

www.ti.com
DRV8824
SLVSA06J – OCTOBER 2009 – REVISED JULY 2014
Electrical Characteristics (continued)
over operating free-air temperature range of –40°C to 85°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
ΔI_TRIP
A_ISENSE
Current trip accuracy
(relative to programmed value)
Current sense amplifier gain
V_(xVREF) = 3.3 V , 5% current setting
V_(xVREF) = 3.3 V , 10% to 34% current setting
V_(xVREF) = 3.3 V, 38% to 67% current setting
V_(xVREF) = 3.3 V, 71% to 100% current setting
Reference only
MIN
–25%
–15%
–10%
–5%
TYP MAX UNIT
25%
15%
10%
5%
5
V/V
7.6 Timing Requirements
1 ƒ_STEP
2
t_WH(STEP)
3
t_WL(STEP)
4
t_SU(STEP)
5
t_H(STEP)
6 t_ENBL
7 t_WAKE
Step frequency
Pulse duration, STEP high
Pulse duration, STEP low
Setup time, command before STEP rising
Hold time, command after STEP rising
Enable time, nENBL active to STEP
Wakeup time, nSLEEP inactive high to STEP input accepted
MIN MAX UNIT
250 kHz
1.9
μs
1.9
μs
200
ns
200
ns
200
ns
1 ms
Figure 1. Timing Diagram
Copyright © 2009–2014, Texas Instruments Incorporated
Product Folder Links: DRV8824
Submit Documentation Feedback
7