STMicroelectronics Stepper motor driver mounting the L6474 in high power PowerSO package EVAL6474PD EVAL6474PD Hoja De Datos
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EVAL6474PD
Electrical characteristics
L6474
10/52
Doc ID 022529 Rev 3
3 Electrical
characteristics
V
SA
= V
SB
= 36 V; V
DD
= 3.3 V; internal 3 V regulator; T
J
= 25 °C, unless otherwise
specified.
Table 5.
Electrical characteristics
Symbol Parameter
Test
condition
Min.
Typ.
Max.
Unit
General
V
SthOn
V
S
UVLO turn-on threshold
7.5
8.2
8.9
V
V
SthOff
V
S
UVLO turn-off threshold
6.6
7.2
7.8
V
V
SthHyst
V
S
UVLO threshold hysteresis
0.7
1
1.3
V
I
q
Quiescent motor supply current
Internal oscillator selected;
V
V
REG
= 3.3 V ext; CP
floating
0.5 0.65 mA
T
j(WRN)
Thermal warning temperature
130
°C
T
j(SD)
Thermal shutdown temperature
160
°C
Charge pump
V
pump
Voltage swing for charge pump oscillator
10
V
f
pump,min
Minimum charge pump oscillator frequency
(1)
660 kHz
f
pump,max
Maximum charge pump oscillator frequency
800 kHz
I
boot
Average boot current
f
sw,A
= f
sw,B
= 15.6 kHz
POW_SR = ‘10’
1.1 1.4 mA
Output DMOS transistor
R
DS(on)
High-side switch ON resistance
T
j
= 25 °C, I
out
= 3A
0.37
Ω
T
j
= 125 °C,
(2)
I
out
= 3A
0.51
Low-side switch ON resistance
T
j
= 25 °C, I
out
= 3A
0.18
T
j
= 125 °C,
I
out
= 3A
0.23
I
DSS
Leakage current
OUT = V
S
3.1
mA
OUT = GND
-0.3
t
r
Rise
time
(3)
POW_SR = '00', I
out
= +1A
100
ns
POW_SR = '00', I
out
= -1A
80
POW_SR = ‘11’, I
out
= ±1A
100
POW_SR = ‘10’, I
out
= ±1A
200
POW_SR = ‘01’, I
out
= ±1A
300