參數(shù)資料
型號: LTC3714EG
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Intel Compatible, Wide Operating Range, Step-Down Controller with Internal Op Amp
中文描述: 2 A SWITCHING CONTROLLER, PDSO28
封裝: 5.30 MM, PLASTIC, SSOP-28
文件頁數(shù): 23/28頁
文件大小: 345K
代理商: LTC3714EG
LTC3714
23
3714f
APPLICATIOU
Solving for this resistance value:
W
U
U
R
V
I
V g
)
1 15
)1 7
V
V
V
V
mS
mV
k
VP
OUT
TH
m
OUT
=
)1 08
=
=
0 6
)
0 6
)(
)
.
60
20 3
The gain setting resistance R
VP
is implemented with two
resistors, R
VP1
connected from I
TH
to ground and R
VP2
connected from I
TH
to INTV
CC
. The parallel combination of
these resistors must equal R
VP
and their ratio determines
nominal value of the I
TH
pin voltage when the error
amplifier input is zero. To set the beginning of the load line
at the regulation point, the I
TH
pin voltage must be set to
correspond to zero output current. The relation between
voltage and the output current is:
I
V
V
12
0 5
0 55
R
I
V
V
V
V
A
A
V
TH NOM
(
RNG
SENSE OUT
L
)
.
.
.
.
.
.
=
(
+
+
=
)
=
12
1
2
1
25 4
0 75
0 003
0
0 75
C
100pF
R
VP1
23k
R
185k
C
2.2nF
C
SS
0.1
μ
F
C
FB
100pF
C
ION
0.01
μ
F
R
330k
R
C
20k
R
90.1k
R
10k
3714 F08
R
100k
R
F
1
C
0.33
μ
F
M1
IRF7811
D1
UPS840
L1
0.68
μ
H
M2
IRF7811
×
2
D
CMDSH-3
C
VCC
4.7
μ
F
C
F
0.1
μ
F
5V
C
IN
10
μ
F
25V
×
3
V
7V TO 24V
V
OUT
1.15V/15A
C
OUT
270
μ
F
2V
×
3
C
IN
: UNITED CHEMICON THCR70EIH226ZT
C
: PANASONIC EEFUE0D271
L1: SUMIDA CEP125-4712-T007
0.1
μ
F
INTV
CC
R
0.003
9
10
11
12
13
14
19
21
22
20
23
24
15
16
8
7
6
5
4
3
2
1
28
27
26
25
18
17
VID2
RUN/SS
V
ON
PGOOD
V
RNG
I
TH
SGND
I
ON
V
FB
FCB
V
OSENSE
VID3
OPV
IN
OP
VID1
VID0
BOOST
TG
SW
SENSE
PGND
BG
INTV
CC
V
IN
EXTV
CC
VID4
OPOUT
OP
+
LTC3714
Figure 9. CPU Core Voltage Regulator with Active Voltage Positioning 1.15V/15A at 300kHz
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