Datasheet

L6474 Electrical characteristics
Doc ID 022529 Rev 3 13/52
t
disCS
Deselect time
(7)
800 ns
t
setSDI
Data input set-up time
(7)
25 ns
t
holSDI
Data input hold time
(7)
20 ns
t
enSDO
Data output enable time
(7)
38 ns
t
disSDO
Data output disable time
(7)
47 ns
t
vSDO
Data output valid time
(7)
57 ns
t
holSDO
Data output hold time
(7)
37 ns
Current control
I
STEP,max
Max. programmable reference current 4 A
I
STEP,min
Min. programmable reference current 31 mA
Overcurrent protection
I
OCD,MAX
Maximum programmable overcurrent
detection threshold
OCD_TH = ‘1111’ 6 A
I
OCD,MIN
Minimum programmable overcurrent
detection threshold
OCD_TH = ‘0000’ 0.375 A
I
OCD,RES
Programmable overcurrent detection
threshold resolution
0.375 A
t
OCD,Flag
OCD to flag signal delay time dI
out
/d
t
= 350A/µs 650 1000 ns
t
OCD,SD
OCD to shut down delay time
dI
out
/d
t
= 350A/µs
POW_SR = '10'
600 µs
Standby
I
qSTBY
Quiescent motor supply current in standby
conditions
V
S
= 8 V 26 34
µA
V
S = 36 V 30 36
t
STBY,min
Minimum standby time 10 µs
t
logicwu
Logic power-on and wake-up time 38 45 µs
t
cpwu
Charge pump power-on and wake-up time
Power bridges disabled, C
p
= 10 nF, C
boot
= 220 nF
650 µs
Internal voltage regulator
V
REG
Voltage regulator output voltage 2.9 3 3.2 V
I
REG
Voltage regulator output current 40 mA
V
REG, drop
Voltage regulator output voltage drop I
REG
= 40 mA 50 mV
I
REG,STBY
Voltage regulator standby output current 10 mA
Integrated analog to digital converter
N
ADC
Analog to digital converter resolution 5 bit
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit