Fujitsu MB3842, Datasheet

Page: 6 / 19

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
Ω
pull down
— 100 200
µ
s
OUT pin fall time t
OFF
SS pin: Open
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
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