Datasheet

DocID022729 Rev 3 11/70
L6472 Electrical characteristics
70
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
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
(1)
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
= 3 A 0.37

T
j
= 125 °C,
(2)
I
out
= 3 A 0.51
Low-side switch on-resistance
T
j
= 25 °C, I
out
= 3 A 0.18
T
j
= 125 °C,
(2)
I
out
= 3 A 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
= +1 A 100
ns
POW_SR = '00', I
out
= -1 A 80
POW_SR = ‘11’, I
out
= ±1 A 100
POW_SR = ‘10’, I
out
= ±1 A 200
POW_SR = ‘01’, I
out
= ±1 A 300