Datasheet

Electrical specifications L6460
22/139 Doc ID 17713 Rev 1
t
delay
Current limit
delay time
5 μs
t
OC_off
Over current Off time
MtrXIlimitOffTimeY[1:0]=00
MtrXIlimitOffTimeY[1:0]=01
MtrXIlimitOffTimeY[1:0]=10
MtrXIlimitOffTimeY[1:0]=11
(19)
60
120
240
480
µs
µs
µs
µs
t
r1_2
Output rise time
bridges 1 and 2
V
Supply
= 36V, resistive load
between outputs:
R= 25 Ω
(20)
100 180 250 ns
t
r3_4
Output rise time
bridges 3 and 4
V
Supply
= 36V, resistive load
between outputs:
R= 36 Ω
(20)
50 100 200 ns
t
f1_2
Output fall time
bridges 1 and 2
V
Supply
= 36V, resistive load
between outputs:
R= 25 Ω
(20)
100 180 250 ns
t
f3_4
Output fall time
bridges 3 and 4
V
Supply
= 36V, resistive load
between outputs:
R= 36 Ω
(20)
50 125 250 ns
t
deadRise
Anti crossover rising dead time 100 300 450 ns
t
deadFall
Anti crossover falling dead
time
100 300 450 ns
F
PWM
Operating frequency
F
osc
/51
2
kHz
t
resp
Delay from PWM to output
transition
500 ns
Bipolar stepper circuitry
V
STEPREF
Reference voltage
SelStepRef =0
SelStepRef =1
0.48
0.72
0.50
0.75
0.52
0.78
V
V
offset
Sense comparator offset -12 12 mV
t
blk
Blanking time
StepBlkTime = ‘00’
(8)
0.65 0.95 1.25 µs
StepBlkTime = ‘01’ 1 1.45 1.9 µs
StepBlkTime = ‘10’ 1.5 2.25 3 µs
StepBlkTime = ‘11’ 3 4.25 5.5 µs
Synchronous buck regulator (bridge 3)
V
AUX_SW
Output pin voltage range
(DC3x)
(26)
-1 V
Supply
V
I
Q
Output leakage current T
junction
= 125°C -50 +50 µA
I
QLP
Output leakage current in “Low
Power Mode”
V
Supply
= 36V
T
junction
= 125°C
-10 +10 µA
Table 5. Electrical characteristics (continued)
Parameter Description Test condition Min Typ Max Unit