Datasheet

23
LTC3776
3776fa
TYPICAL APPLICATIO S
U
Figure 14. 2-Phase, 550kHz, DDR Memory Supplies
SGND
PLLLPF
IPRG2
IPRG1
V
FB1
I
TH1
SW1
R
VIN
10Ω
R
ITH2
6.2k
C
ITH2
2.2nF
C
SS
10nF
C
IN
10μF
×2
C
VIN
1μF
V
IN
5V
V
IN
C
ITH2B
330pF
R
ITH1
22k
C
ITH1
1000pF
C
ITH1A
100pF
R
FB1B
187k
R
FB1A
59k
PGOOD
V
FB2
V
REF
25
I
TH2
TG2
LTC3776EUF
PGND
TG1
SYNC/SSEN
BG1
PGND
22
21
20
19
18
17
16
15
14
13
12
11
10
23
24
1
2
3
4
5
9
8
7
6
SENSE1
+
MP1
MP2
L1
1.5μH
L2
1.5μH
MN1
Si7540DP
MN2
Si7540DP
RUN/SS
BG2
PGND
PGND
SW2
SENSE2
+
C
OUT2
100μF
C
OUT1
100μF
V
DDQ
2.5V
5A
V
TT
1.25V
±5A
3776 F14