參數(shù)資料
型號: LTC3610IWP
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, PQCC64
封裝: 9 X 9 MM, PLASTIC, QFN-64
文件頁數(shù): 9/24頁
文件大?。?/td> 388K
代理商: LTC3610IWP
LTC3610
3610ff
Figure6.DesignExample:5Vto24VInputto2.5V/12Aat550kHz
VOUT
2.5V AT
12A
GND
VIN
5V TO 24V
COUT1
220F
C5
22F
6.3V
L1
0.8H
CIN
10F
35V
+
C6
10F
35V
+
(OPTIONAL)
CIN: TAIYO YUDEN GMK325BJ106MM-B
COUT: SANYO 10TPE220ML
L1: CDEP85NP-R80MC-50
C5: MURATA GRM31CR60J226KE19
LTC3610
SGND
48
SGND
47
SGND
46
SGND
45
EXTVCC
44
VFB
43
SGND
42
ION
41
SGND
40
FCB
39
ITH
38
VRNG
37
PGOOD
36
VON
35
SGND
34
SGND
GND
VOUT
33
PV
IN
17
PV
IN
18
PV
IN
19
PV
IN
20
PV
IN
21
PV
IN
22
PV
IN
23
PV
IN
24
PV
IN
25
SW
26
NC
27
SGND
28
BOOST
29
RUN/SS
30
SGND
31
SGND
32
PGND
64
PGND
63
PGND
62
PGND
61
PGND
60
PGND
59
PGND
58
PGND
57
PGND
56
SW
55
INT
V CC
INTVCC
54
INT
V CC
INTVCC
53
SV
IN
VIN
52
SV
IN
51
SGND
50
SGND
49
PGND
1
PGND
2
PGND
3
SW
4
SW
5
SW
6
SW
7
SW
8
SW
9
SW
10
SW
11
PVIN
VIN
12
PVIN
13
PVIN
14
PVIN
15
PVIN
16
3610 F06
CF
0.1F
25V
RF1
1
CVCC
4.7F
6.3V
C3
CON
0.01F
C4
0.01F
C2
C1
CB1
0.22F
DB
CMDSH-3
CSS
0.1F
VIN
RSS1
510k
(OPTIONAL)
R1
9.5k
1%
R2
30.1k
1%
RVON
0
RPG1
100k
RON
182k
1%
R5
31.84k
R3
0
CC1
470pF
CC2
100pF
(OPTIONAL)
applications inForMation
PCBoardLayoutChecklist
When laying out a PC board follow one of the two sug-
gested approaches. The simple PC board layout requires
a dedicated ground plane layer. Also, for higher currents, a
multilayerboardisrecommendedtohelpwithheatsinking
of power components.
The ground plane layer should not have any traces and
it should be as close as possible to the layer with the
LTC3610.
Place CIN and COUT all in one compact area, close to
the LTC3610. It may help to have some components
on the bottom side of the board.
Keep small-signal components close to the LTC3610.
Ground connections (including LTC3610 SGND and
PGND) should be made through immediate vias to
the ground plane. Use several larger vias for power
components.
Useacompactplanefortheswitchnode(SW)toimprove
cooling of the MOSFETs and to keep EMI down.
Use planes for VIN and VOUT to maintain good voltage
filtering and to keep power losses low.
Flood all unused areas on all layers with copper. Flood-
ing with copper reduces the temperature rise of power
components. Connect these copper areas to any DC
net (VIN, VOUT, GND or to any other DC rail in your
system).
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PDF描述
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