LTC3731 Linear Technology, LTC3731 Datasheet - Page 29

• Manufacturer Part Number: LTC3731
• Description: Synchronous Buck Switching Regulator Controller
• Manufacturer: Linear Technology

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TYPICAL APPLICATIO
270pF
1.2k
2700pF
SYNC IN
I
TH
330pF
V
CC
NOTES:
V5: 5V TO 7V
V
SWITCHING FREQUENCY: 500kHz (V5 = 5V)
1000pF
1000pF
IN
0.1µF
V
100pF
8.2k
3.3k
4.7k
IN
10k
: 10V TO 14V; V
1k
V
V
68pF
0.01µF
357k
OUTS
OUTS
121k
S1
S1
S2
S2
S3
S3
S4
S4
S5
S5
S6
S6
DIFFOUT
+
–
+
–
–
+
+
–
+
–
–
+
+
–
15k
EAIN
10Ω×6
10Ω×6
UVADJ
RUN/SS
RUN/SS
OUT
DIFFOUT
EAIN
: 2.5V/100A
1000pF
1000pF
1000pF
1000pF
1000pF
1000pF
100pF
220pF
10pF
V
V
UVADJ
OUTS
OUTS
CLK1
U
V
V
CC
CC
1000pF
+
–
10
11
12
13
14
15
16
17
18
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
V
PLLIN
PLLFLTR
FCB
IN
IN
DIFFOUT
EAIN
SGND
SENSE1
SENSE1
SENSE2
SENSE2
SENSE3
SENSE3
RUN/SS
I
UVADJ
V
PLLIN
PLLFLTR
FCB
IN
IN
DIFFOUT
EAIN
SGND
SENSE4
SENSE4
SENSE5
SENSE5
SENSE6
SENSE6
RUN/SS
I
UVADJ
TH
TH
CC
CC
+
–
+
–
M1, M4, M7, M10, M13, M16:
SILICONIX Si7390DP OR HAT2168
M2, M3, M5, M6, M8, M9, M11, M12, M14, M15,
M17, M18: SILICONIX Si7356DP OR HAT2165
D1 TO D6: B320A
Figure 15. 2.5V/100A Power Supply
LTC3731
LTC3731
+
–
+
–
–
+
+
–
+
–
–
+
PHASMD
PHASMD
CLKOUT
BOOST1
BOOST2
BOOST3
CLKOUT
BOOST4
BOOST5
BOOST6
PGOOD
PGOOD
SGND2
SGND2
PGND
PGND
SW1
SW2
SW3
SW4
SW5
SW6
BG1
BG2
BG3
BG4
BG5
BG6
TG1
TG2
V
TG3
TG4
TG5
V
TG6
DR
DR
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
CLK1
CLKOUT
V
CC
V
CC
1µF
Cer.
1µF
Cer.
0.1µF
0.1µF
PGOOD
0.1µF
0.1µF
+
0.1µF
0.1µF
+
1µF
4.7µF
4.7µF
10Ω
1Ω
PGOOD
10Ω
10k
BOOST4
M1
X2
M2,3
M4
X2
M5,6
M7
X2
M8,9
M10
X2
M11,12
M13
X2
M14,15
M16
X2
M17,18
L1 TO L6: TOKO FDH1040: 0.56µH
C
C
IN
OUT
BOOST1
: 10µF/16V CERAMIC × 10 + 270µF/16V SANYO Os-Con
: 100µF/6.3V/X5R × 10 + 330µF/4V × 8
BOOST5
V
V
IN
IN
V
V
V
V
BOOST2
IN
IN
IN
IN
D1
D2
D3
D4
D5
D6
BOOST6
L1
L2
L3
L4
L5
L6
BOOST3
S1
S2
S3
S4
S5
S6
+
+
+
+
+
+
V5
0.002Ω
0.002Ω
0.002Ω
0.002Ω
0.002Ω
0.002Ω
10µF
Cer.
S1
S2
S3
S4
S5
S6
–
–
–
–
–
–
+
10µF
10V
LTC3731
V5
+
+
V
OUT
3731 F15
29
C
C
OUT
IN
V
3731fa
IN