LTC3709 Linear Technology, LTC3709 Datasheet - Page 22

• Manufacturer Part Number: LTC3709
• Description: No RSENSE Synchronous DC/DC Controller
• Manufacturer: Linear Technology

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LTC3709
APPLICATIO S I FOR ATIO
22
L1, L2: PANASONIC ETQP6FIR8BFA
C
M1, M3: SILICONIX Si4884DY
M2, M4: SILICONIX Si4874DY
OUT
: PANASONIC EEFUEOG181R
R
C
F2
C
100pF
470pF
10k
100nF
100nF
0.22µF
U
C
C
470pF
B2
SS
1nF
0.1µF
R
100pF
Figure 9. 2-Phase 2.5V/20A Supply at 250kHz with Tracking and External Synch
F1
475Ω
3.32k
R
TRACK
U
31.6k
C
20k
(OPTIONAL)
MMSD4148
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
SGND
RUN/SS
I
V
TRACK
SGND
V
DIFFOUT
V
EXTLPF
INTLPF
NC
BOOST2
TG2
SW2
SENSE2
TH
W
FB
OS
OS
LTC3709EUH
–
+
+
SENSE1
SENSE2
SENSE1
BOOST1
PGOOD
100pF
PGND1
PGND2
DRV
V
SW1
TG1
BG1
BG2
RNG
FCB
V
I
ON
CC
CC
+
–
–
U
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
R
PGOOD
PGOOD
R
100pF
1µF
10Ω
C
1µF
ON
B1
1µF
100k
476k
0.22µF
10nF
f
IN
D
B1
CMDSH-3
CMDSH-3
D
B2
35.7k
10k
V
7V TO 28V
DRV
5V
IN
CC
M1
M3
C
35V ×3
IN
10µF
M2
M4
B340A
B340A
D1
D2
180µF
4V ×4
C
1.8µH
OUT
L2
L1
1.8µH
3709 F09
V
2.5V
20A
OUT
3709f