Datasheet

DocID17928 Rev 5 5/29
ST1S40 Electrical characteristics
29
4 Electrical characteristics
T
J
= 25 °C, V
CC
= 12 V, unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test condition
Values
Unit
Min. Typ. Max.
V
IN
Operating input voltage
range
(1)
418
V
V
INON
Turn-on V
CC
threshold
(1)
2.9
V
INHYS
Threshold hysteresis
(1)
0.250
R
DSON
-P
High side switch ON
resistance
I
SW
= 750 mA
95
m
R
DSON
-N
Low side switch ON
resistance
I
SW
= 750 mA 69 m
I
LIM
Maximum limiting current
(2)
4.0 6.0 A
Oscillator
F
SW
Switching frequency 0.7 0.85 1 MHz
D
MAX
Maximum duty cycle
(2)
100 %
Dynamic characteristics
V
FB
Feedback voltage
0.784 0.8 0.816
V
(1)
0.776 0.8 0.824
%V
OUT
/
I
OUT
Reference load
regulation
Isw = 10 mA to I
LIM
(2)
0.5 %
%V
OUT
/
V
IN
Reference line regulation V
IN
= 4.0 V to 18 V
(2)
0.4 %
DC characteristics
I
Q
Quiescent current
Duty cycle = 0, no load
V
FB
= 1.2 V
1.5 2.5 mA
I
QST-BY
Total standby quiescent
current
OFF 2 15 A
IFB FB bias current 50
Enable
V
EN
EN threshold voltage
Device ON level 1.2
V
Device OFF level 0.4
I
EN
EN current 2 A