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L6474 Datasheet(PDF) 12 Page - STMicroelectronics

No. de pieza L6474
Descripción Electrónicos  easySPIN ??fully integrated microstepping motor driver
PDF  51 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6474 Datasheet(HTML) 12 Page - STMicroelectronics

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Electrical characteristics
L6474
12/51
Doc ID 022529 Rev 2
tholCS
Chip select hold time (7)
10
ns
tdisCS
Deselect time (7)
800
ns
tsetSDI
Data input set-up time (7)
25
ns
tholSDI
Data input hold time (7)
20
ns
tenSDO
Data output enable time (7)
38
ns
tdisSDO
Data output disable time (7)
47
ns
tvSDO
Data output valid time (7)
57
ns
tholSDO
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
IOCD,MAX
Maximum programmable overcurrent
detection threshold
OCD_TH = ‘1111’
6
A
IOCD,MIN
Minimum programmable overcurrent
detection threshold
OCD_TH = ‘0000’
0.375
A
IOCD,RES
Programmable overcurrent detection
threshold resolution
0.375
A
tOCD,Flag
OCD to flag signal delay time
dIout/dt = 350A/µs
650
1000
ns
tOCD,SD
OCD to shut down delay time
dIout/dt = 350A/µs
POW_SR = '10'
600
µs
Standby
IqSTBY
Quiescent motor supply current in standby
conditions
VS = 8 V
26
34
µA
VS = 36 V
30
36
tSTBY,min
Minimum standby time
10
µs
tlogicwu
Logic power-on and wake-up time
38
45
µs
tcpwu
Charge pump power-on and wake-up time
Power bridges disabled, Cp
= 10 nF, Cboot = 220 nF
650
µs
Internal voltage regulator
VREG
Voltage regulator output voltage
2.9
3
3.2
V
IREG
Voltage regulator output current
40
mA
VREG, drop
Voltage regulator output voltage drop
IREG = 40 mA
50
mV
IREG,STBY
Voltage regulator standby output current
10
mA
Integrated analog to digital converter
NADC
Analog to digital converter resolution
5
bit
Table 5.
Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Typ.
Max. Unit



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