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Электронный компонент: IL3844N (ru)

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IL3844


() IL3844 -

, -
. -

.
IL3844
-
, ,

, -
50 % 70 %.
/ -
16/10, -
.
1.
:
- 500 ;
- 50 % 70 %;
- ;
- -
;
- - ;
- -
;
- -
;
- ;
- -
;
- ;
- .





-
IL3844N
0 to +70C DIP
IL3844NF 0 to +70C DIP
1
IL3844
1 -
-
-
(I
CC
+I
Z
)
-
30
( 1)
I
O
-
1.0
A
( )
w
-
5.0
-
V
in
-0.3
5.5
I
OE
-
10
=25C
IL3844N
P
D
-
1.25
IL3844NF
P
D
-
0.862
-
IL3844N
R
TJA
-
100 C/
IL3844NF
R
TJA
-
145 C/
T
J
-
150 C
Tstg
-65
150 C

2
IL3844

(V
CC
=15 , [ 2], R
T
=10 , C
T
=3.3 , T
A
=T
LOW
T
HIGH
[ 3], ,
)
-
IL3844
.
.
(I
0
=1.0 , T
J
=25C)
V
ref
4.9
5.0
5.1
(
V
CC
=12
25 )
Reg
line
-- 2.0 20
(I
0
=1
20 )
Reg
load
-- 3.0 25
T
S
--
0.2
--
/C
, ,
V
final
4.82
-- 5.18
(f=10
10 , T
J
=25C) V
n
--
50
--
(
T
A
=125C 1000 ) S --
5.0
--
I
SC
-30
-85
-180
f
OSC
T
J
=25C
47
52
57
T
A
=T
LOW
T
HIGH
46
--
60
(
V
CC
=12
25 )
f
OSC
/
V -- 0.2 1.0 %
f
OSC
/
T -- 5.0 -- %
T
A
=T
LOW
T
HIGH
( ) V
OSC
--
1.6 --
(V
OSC
=2.0 , T
J
=25C) I
dischg
--
10.8
--

: 1. .
2. V
CC
, 15 V.
3.
.
T
LOW
= 0C IL3844 T
HIGH
= +70"C IL3844
4. V
FB
= 0 V.
5. :
A
V Output / Compensation
V Current Sense Input
V
=

(V
CC
=15 , [ 2], R
T
=10 , C
T
=3.3 , T
A
=T
LOW
T
HIGH
[ 3], ,
)
-
IL3844
.
.
(V
0
=2.5 ) V
FB
2.42
2.5 2.58
(V
FB
=2.7 ) I
IB
--
-0.1
-2.0
(V
0
=2.0
4.0 ) A
VOL
65 90 --
(
T
J
=25C) BW
0.7
1.0
--
(V
CC
=12
25 )
PSRR 60 70 --
(V
0
=1.1 , V
FB
=2.7 ) I
Sink
2.0 12 --
(V
0
=5.0 , V
FB
=2.3 ) I
source
-0.5 -1.0 --
(R
L
=15 , V
FB
=2.3 ) V
OH
5.0 6.2 --
(
R
L
=15 Vref, V
FB
=2.7 ) V
OL
-- 0.8 1.1
2
IL3844

( 4
5)
A
V
2.85
3.0 3.15 /
( 4)
V
th
0.9
1.0 1.1
PSRR -- 70 --
V
CC
=12
25, 4
I
IB
--
-2.0
-10
t
PLH(IN/OUT)
-- 150 300
(I
Sink
=20 ) V
OL
-- 0.1 0.4
(I
Sink
=200 )
--
1.6
2.2
(I
Source
=20 ) V
OH
13
13.5 --
(I
Source
=200 )
12
13.4
--
(V
CC
=6.0 , I
Sink
=1.0 )
V
OL(UVLO)
-- 0.1 1.1
(C
L
=1.0 ,
T
J
=25C) t
r
--
50
150
(C
L
=1.0 ,
T
J
=25C) t
f
--
50
150
V
th
14.5
16 17.5
V
CC(min)
8.5 10 11.5
%
DC
max
47 48 50
DC
min
-- -- 0
I
CC
(V
CC
=14 )
--
0.5
1.0
( 2)
--
12
17
(I
CC
=25 ) V
Z
30
36 --

: 1. .
2. V
CC
, 15 V.
3.
.
T
LOW
= 0C IL3844 T
HIGH
= +70"C IL3844
4. V
FB
= 0 V.
5. :
A
V Output / Compensation
V Current Sense Input
V
=


IL3844 -
. ,
.
2.
3
IL3844
2 -

:

R
T
C
T
. C
T
5,0 R
T
2,8 1,2
. C
T
,
- .
, . , IL3844,

.
C
T
, , 50 %
70 %. 11 R
T
C
T
,
12 C
T
. ,
R
T
C
T
,
.
,
. ,
3. , 10 %,
. 4.
, .
,
. 90 1,0
57 .
2,5 . -2,0 ,
4