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LTC3828 Datasheet, PDF (29/32 Pages) Linear Technology – Dual 2-Phase Step-Down Controller with Tracking | |||
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APPLICATIO S I FOR ATIO
LTC3828
0.1µF
33pF
1000pF
15k
R1
R2
20k 1% 105k 1%
180pF
fIN
30k 158k
33pF
1000pF
15k
R3
R4
20k 1% 63.4k 1%
180pF
1
TRCKSS1
28
CLKOUT
2
ITH1
27
PGOOD
3
LTC3828EG
SENSE1+
BOOST1
26
4 SENSE1â
25
TG1
5
VOSENSE1
6
PLLFLTR
24
SW1
23
VIN
7
RUN1
22
INTVCC
8
FCB/PLLIN
21
PGND
9
SGND
20
BG1
10
TRCKSS2
19
BG2
11 SENSE2â
18
SW2
12 SENSE2+
17
TG2
13
ITH2
14
VOSENSE2
16
BOOST2
15
RUN2
10â¦
2nF
10â¦
RPU VPULL_UP
<5.5V
PGOOD
L1
4.7µH
RSENSE1
0.015â¦
VOUT1
5V
3A
CB1
0.22µF
M1
M2
D1
1µF
CERAMIC
RIN
10â¦
COUT1
1µF
CVIN
CIN
150µF 6.3V
0.1µF 22µF 50V
CINTVCC
4.7µF
1µF
CERAMIC
COUT2
180µF 4V
VIN
7V TO 28V
CB2
0.22µF
10â¦
2nF
10â¦
M3
M4
D2
L2
4.7µH
RSENSE2
0.01â¦
3828 F14
VOUT2
3.3V
5A
Figure 14. LTC3828 High Efficiency Low Noise 5V/3A,
3.3V/5A, Regulator with Ratiometric Tracking
3828f
29
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