Fujitsu MB3845 Benutzerhandbuch
6
MB3842/MB3845
■
ELECTRICAL CHARACTERISTICS (per 1 ch)
• MB3842/MB3845 (V
IN
= 5 V, Ta = +25
°
C)
• MB3842
(V
IN
= 5 V, Ta = +25
°
C)
• MB3845
(V
IN
= 5 V, Ta = +25
°
C)
Parameter
Symbol
Condition
Value
Unit
Min.
Typ.
Max.
Switch resistance
R
ON
I
SW
=0.6A
—
100
150
m
Ω
IN pin input current
I
IN1
I
SW
= 0 A
—
350
550
µ
A
I
IN2
I
SW
= 0.6 A
—
1.0
1.5
mA
I
IN3
EN
<
0.8V for MB3842,
EN
=
V
IN
for MB3845
—
—
1.0
µ
A
UVLO threshold
V
IUH
V
IN
at OC = L
→
H
2.1
2.3
2.5
V
V
IUL
V
IN
at OC = H
→
L
1.9
2.1
2.3
V
UVLO hysteresis width
V
IUHY
V
IUHY
= V
IUH
– V
IUL
100
200
300
mV
Switch current limit
I
SWH
R
LIM
= 2.0 k
Ω
0.42
0.6
0.78
A
I
SWL
R
LIM
= 6.2 k
Ω
0.06
0.1
0.14
A
OC sink current
I
OCS
V
OC
= 0.4 V at OC active
2.0
5.0
—
mA
I
OCL
V
OC
= 5.0 V at OC non-active
—
—
1.0
µ
A
Temperature protection (T
j
)
T
LIM
—
+125
—
—
°
C
OUT pin rise time
t
ON
SS pin: Open
OUT pin: 100 k
OUT pin: 100 k
Ω
pull down
—
100
200
µ
s
OUT pin fall time
t
OFF
SS pin: Open
OUT pin: 100 k
OUT pin: 100 k
Ω
pull down
—
50
120
µ
s
Parameter
Symbol
Condition
Value
Unit
Min.
Typ.
Max.
ENABLE pin input current
I
ENH
V
EN
= 5 V, I
SW
= 0 A
—
5
10
µ
A
I
ENL
V
EN
= 0 V, I
SW
= 0 A
—
0.0
—
µ
A
ENABLE pin threshold
voltage
voltage
V
THEN
—
1.45
1.60
1.75
V
V
TLEN
—
1.25
1.40
1.55
V
ENABLE hysteresis width
V
ENHY
V
ENHY
= V
THEN
– V
TLEN
100
200
300
mV
Parameter
Symbol
Condition
Value
Unit
Min.
Typ.
Max.
ENABLE pin input current
I
ENH
V
EN
= 5 V, I
SW
= 0 A
—
0.0
—
µ
A
I
ENL
V
EN
= 0 V, I
SW
= 0 A
—
0.0
—
µ
A
ENABLE pin input voltage
V
ILEN
—
0
—
0.8
V
V
IHEN
—
3.0
—
5.0
V