Datasheet

Electrical characteristics L6472
14/70 DocID022729 Rev 3
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
Switch input (SW)
R
PUSW
SW input pull-up resistance SW = GND 60 85 110 k
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’
0.37
5
A
I
OCD,RES
Programmable overcurrent detection
threshold resolution
0.37
5
A
t
OCD,Flag
OCD to flag signal delay time dI
out
/d
t
= 350 A/µs 650 1000 ns
t
OCD,SD
OCD to shutdown delay time dI
out
/d
t
= 350 A/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
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit