Datasheet

LTC4440
9
4440fa
For more information www.linear.com//LTC4440
Typical applicaTions
18 10
911
12V
V
IN
12
LTC3722EGN-1
PDLY
OUTF
OUTE
COMPSSPGNDGND
CS
V
IN
SBUS UVLO
1µF
ADLY
330pF
MMBT3904
2.2nF
100k
D12 5.1V
T3
1(1.5mH):0.5
T1
5(105µH):1:1
T2
5:5(105µH):1:1
2.49k 9.53k
10k
2.7k
470Ω
1/4W
L4
1mH
C3
68µF
20V
V
H
•
•
16
15
8 1 9
5 4
150Ω
0.02Ω 1.5W
30.1k
220pF
100Ω
330Ω
1.10k
909Ω
4.87k 1/4W
4.87k 1/4W
51Ω
2W
220pF
182k
20k
1/4W
220pF
4.99k
20k
180pF
68nF
220pF0.47µF
150k
SYNC PV
CC
CSE
+
LTC3901EGN
CSE
–
8
6 5
1
4 10 13 7
1µF
1µF
4440 TA03
–V
OUT
V
OUT
–V
OUT
D10
10V
V
OUT
ME ME2
GND PGND GND2 PGND2 TIMER
V
CC
330pF
2 3
1.10k 909Ω
39.2k
100Ω
1k
CSF
+
–V
OUT
V
OUT
V
OUT
–V
OUT
V
OUT
12V/35A –V
OUT
CSF
–
11 12
MF MF2
14 15 16
22nF
Si7852DP ×4
Si7852DP ×4
Si7852DP ×2
L1
1.3µH
114
2
12V
D7
D8
4 2 1 6
•
••••
•••
10 8 7
+
1
0.22µF
Si7852DP ×2
3
6 7
824
A
D2
LTC4440EMS8E
BOOSTINP
TG
TSGNDGND
V
CC
12V
1
0.22µF
Si7852DP ×2
3
6 7
8
12VD
24
C
D3
D4
D5
51Ω
2W
0.47µF
100V
LTC4440EMS8E
BOOSTINP
TG
TSGNDGND
V
CC
12V
1µF 100V ×4
V
IN
V
IN
–V
IN
36V TO 72V
1µF 100V
17
D
OUTD
19
10Ω
10Ω
C
OUTC
20
B
OUTB
21
A
OUTA
C1, C2
180µF
16V
×2
+
1µF
0.47µF, 100V TDK C3216X7R2A474M 1µF, 100V TDK C4532X7R2A105M C1,C2: SANYO 16SP180M C3: AVX TPSE686M020R0150 C4: MURATA DE2E3KH222MB3B D1, D4-D6: MURS120T3 D2, D3, D7, D8: BAS21 D9: MMBZ5226B D10: MMBZ5240B D11: BAT54 D12: MMBZ231B L1: SUMIDA CDEP105-1R3MC-50 L2: PULSE PA0651 L3: PA1294.910 L4: COILCRAFT DO1608C-105 Q1, Q2: ZETEX FMMT619 Q3, Q4: ZETEX FMMT718 T1, T2: PULSE PA0526 T3: PULSE PA0785
6
3
422236
33k
5 7
D11
8.25k
I
SNS
5V
REF
I
SNS
0.1µF
5 8
1
2
1
MOC207
C4
2.2nF
250V
0.047µF
3
6
5
8
GND-F
V
+
GND-S
COLL REF
LT1431CS8
1.1k
22Ω
200k
750Ω
100Ω
D9 3.3V
0.02Ω 1.5W
V
H
D1 D6
13k
1/2W
0.47µF
100V
820pF 200V
L3
0.85µH
15Ω 1W
0.47µF
100V
Si7852DP ×2
12VB
Q1 Q3
Q2 Q4
11 10 8 7
MMBT3904
FBSPRG
R
LEB
10k
13
SYNC
5.1k
1
NC
8
DPRG
2
V
REF
5V
REF
14
C
T
24
L2
150nH
•
LTC3722/LTC4440 420W 36V-72V
IN
to 12V/35A Isolated Full-Bridge Supply