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LTC3900MPS8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC3900
13
3900fb
3900 TA02
16
15
14
13
12
11
10
9
COMP
FB = 1.23V
R
OSC
SYNC
MAXDC
V
R
= 2.5V
SD
GND
S
OUT
V
IN
OUT
PGND
DELAY
OC
I
SENSE
BLANK
1
2
3
4
5
6
7
8
LT1952-1
Si7462
22k
S
OUT
100pF
145k
10k10k
47k
Q2 Q3
Q2, Q3, Q4, Q5 = Si7850
L1: DRQ127-220
V
OUT2
24V
2A
V
OUT1
12V
2A
V
OUT1
L1A
0.030R
13.3k
340k
22k
V
U1
V
FB
1µF
82k
680Ω
56k
0.47µF
0.1µF
1.2k
V
FB
BC857BF
33k
115k
V
IN
T1
PA1577
BAS516
BAS516
150µF
16V
33µF
16V
BAS516
BAS516
470R
F
G
BCX56
PDZ10B
1.5mH
0.1µF 0.1µF
V
U1
2
1
7
9
2.2µF
V
IN
36V TO 72V
V
IN
V
U1
1µF
82k
•
3
4
•
•
•
C
G
•
Q4 Q5
L1B
F
G
8
10
•
C
G
V
OUT1
1k
•
+
560R
PE-68386
S
OUT
BCX55
PDZ7.5B
PS2801-1 LT4430
V
AUX
FG
470pF
220pF
CG
V
AUX
1µF
3.92k
5.23k
100k
33pF
15nF
LTC3900
38.3k
10k
10k
CS
+
CS
–
CG
V
CC
SYNC
TIMER
GND
FG
1
2
3
4
8
7
6
5
•
•
V
CC
GND
OC
OPTO
COMP
FB
1
2
3
6
5
4
Typical applicaTions
36V to 72V Input to 12V and 24V (or ± 12V), 2A Output Converter in 1/8th Brick Footprint
The LTC3900 can drive multiple synchronous output
rectifiers. The 12V and 24V or ±12V output converter
has good cross regulation due to low voltage drops in
the output MOSFETs. Other combinations like 3.3V and
–5V or 1.5V and 5V can be easily achieved by changing
the transformer turns ratio.
LTC3900
14
3900fb
Typical applicaTions
I
OUT
(A)
0
90
92
96
6 10
3900 TA03b
88
86
2 4
8 12 14
84
82
94
EFFICIENCY (%)
V
IN
= 24V
V
OUT
= 14V
By Using Active Reset and 60V MOSFETs Converter is Achieving 94% to 95%
Efficiency with Only Four MOSFETs.
Si3459
BAS516
0.1µF
0.1µF
255R
10k
0.004R
40R2-4421.003
HAT2266
×2
BAS521
680µH
BAS516
PZTA42
PDZ10B
1.5mH
V
U1
1
6
6.8µF
×4
V
IN
18V TO 40V
V
IN
22k
7
11
•
•
V
U1
BAS516
255R
220pF
LTC4441
57.6k
332k
2.2µF
V
R
PGND
BL
R
BL
SGND
IN
OUT
DRV
CC
V
IN
FB
EN
1
2
3
4
5
10
9
8
7
6
16
15
14
13
12
11
10
9
COMP
FB = 1.23V
R
OSC
SYNC
MAXDC
V
R
= 2.5V
SD
GND
S
OUT
V
IN
OUT
PGND
DELAY
OC
I
SENSE
BLANK
1
2
3
4
5
6
7
8
LT1952-1
22k
158k
13.3k
165k
22k
V
FB
V
U1
S
OUT
GATE
82k
2K
158k
0.1µF
0.47µF
V
FB
BC857BF
33k
115k
V
IN
V
R
4.7µF
220R
1µF 1.2k
PS2801-1
V
OUT1
2.2nF
1µF
BAS516
270R
LT4430
V
AUX
3.65k
15nF
33pF
1.96k
82.5k
V
CC
GND
OC
OPTO
COMP
FB
1
2
3
6
5
4
3900 TA03a
V
OUT1
14V
14A
HAT2266
PA1494.362
33µF
150µF
PXE
FG
2, 3
4, 5
•
CG
+
1k
560R
PE-68386
GATE
BCX55
PDZ7.5B
FG
470pF
220pF
CG
V
AUX
0.22µF
1µF
10k
82k
47k
V
AUX
10k
LTC3900
CS
+
CS
–
CG
V
CC
SYNC
TIMER
GND
FG
1
2
3
4
8
7
6
5
•
•
PGND
18V to 40V Input to 14V at 14A Output Converter in 1/4 Brick Footprint
LTC3900
15
3900fb
3900 TA04a
14
11
10
15
8
13
12
16
SD/V
SEC
R
OSC
BLANK
SS
V
R
COMP
FB
OUT
OC
I
SENSE
V
IN
GND
PGND
DELAY
S
OUT
7
3
9
5
6
1
2
5
8
6
7
3
1
2
4
LT1952-1
Si7430
470pF
12.4k
L1: PULSE PA1393.302
L2: COILCRAFT DO1607B-155
ALL CERAMIC CAPS ARE X5R OR X7R
220pF
75k
2k
38.3k
1k
1nF
97.6k
47nF
0.1µF
1µF
13.3k
370k
82k
2.2µF
PZTA42
22k158k
82k
133k
V
U1
T1
PA0423
V
U1
4.7µF
0.010
PE-68386
•
•
7
10
560R
BAS516PDZ10B
1.5mH 3µH
V
U1
1
6
V
IN
36V TO 72V
L2 L1
2
5
•
•
•
LTC3900
PDZ7.5
BCX55
47k
10k
1µF
HAT2244
33µF
V
OUT
12V
14A
FB
SYNC
GND
TIMER
CG
CS
+
CS
–
V
CC
10k
20k
Typical applicaTions
I
OUT
(A)
0
90
92
96
6 10
3900 TA04b
88
86
2 4
8 12 14
84
82
94
EFFICIENCY (%)
V
IN
= 48V
V
OUT
= 12V
36V to 72V Input to 12V, 14A Output Converter in 1/8th Brick Footprint
The Efficiency of 12V Output Converter is Over 95% at 8A Output.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC3900MPS8#PBF

Mfr. #:
Buy LTC3900MPS8#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Gate Drivers Sync Rectifier Drvr for For Convs
Lifecycle:
New from this manufacturer.
Delivery:
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