Datasheet

DRV8824
www.ti.com SLVSA06G –OCTOBER 2009–REVISED AUGUST 2013
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range of -40°C to 85°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
xVREF = 3.3 V , 5% current setting –25 25
xVREF = 3.3 V , 10% - 34% current
–15 15
setting
Current trip accuracy
ΔI
TRIP
%
xVREF = 3.3 V, 38% - 67% current
(relative to programmed value)
–10 10
setting
xVREF = 3.3 V, 71% - 100% current
–5 5
setting
A
ISENSE
Current sense amplifier gain Reference only 5 V/V
TIMING REQUIREMENTS
MIN MAX UNIT
1 f
STEP
Step frequency 250 kHz
2 t
WH(STEP)
Pulse duration, STEP high 1.9 μs
3 t
WL(STEP)
Pulse duration, STEP low 1.9 μs
4 t
SU(STEP)
Setup time, command to STEP rising 200 ns
5 t
H(STEP)
Hold time, command to STEP rising 200 ns
6 t
ENBL
Enable time, nENBL active to STEP 200 ns
7 t
WAKE
Wakeup time, nSLEEP inactive to STEP 1 ms
Figure 1. Timing Diagram
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