Datasheet

STEP
DIR, USMx
SLEEPn, ENABLEn, RESETn
1
2
3
4
5
6
OUTPUT
8
10
7
9
11
DRV8818
SLVSAX9C –SEPTEMBER 2011–REVISED NOVEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Protection Circuits
T
TSD
Thermal shutdown temperature Die temperature 150 160 180 °C
I
OCP
Overcurrent protection level 3.5 A
t
OCP
OCP deglitch time 1.5 µs
t
RET
OCP retry time 800 µs
TIMING REQUIREMENTS
T
A
= 25°C (unless otherwise noted)
PARAMETER MIN MAX UNIT
1 f
STEP
Step frequency 500 kHz
2 t
WH(STEP)
Pulse duration, STEP high 1 μs
3 t
WL(STEP)
Pulse duration, STEP low 1 μs
4 t
SU(STEP)
Setup time, command before STEP rising 200 ns
5 t
H(STEP)
Hold time, command after STEP rising 200 ns
6 t
WAKE
Wakeup time, SLEEPn inactive high to STEP input accepted 1 ms
7 t
SLEEP
Sleep time, SLEEPn active low to outputs disabled 5 μs
8 t
ENABLE
Enable time, ENABLEn inactive high to outputs enabled 20 μs
9 t
DISABLE
Disable time, ENABLEn active low to outputs disabled 20 μs
10 t
RESETR
Reset release time, RESETn inactive high to outputs enabled 5 μs
11 t
RESET
Reset time, RESETn active low to outputs disabled 5 μs
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