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LTC3900MPS8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC3900
16
3900fb
Typical applicaTions
18V to 72V Input to 12V at 13A Active Reset Converter Fits in 1/8th Brick Size
I
OUT
(A)
0
90
92
96
6 10
3900 TA05b
88
86
2 4
8 12 14
84
80
82
94
EFFICIENCY (%)
24V
IN
48V
IN
The High Efficiency of Converter is Achieved by Precise MOSFET Timing Provided
by LT1952 and LTC3900 Controllers.
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
BAS516
LTC4440
HAT2173
×2
GATE
22k
220pF
237Ω
Si2325
33nF
10k
0.1µF
BAS516
V
U1
V
FB
57Ω 0.006Ω
3 5
1, 6
2, 4
137k
13.3k
189k
22k
1k
0.1µF
1µF
39.2K
V
FB
V
U1
BC857
33k
174k
V
R2
332k
V
B
4.7µF
40R2-4444.004
BAS516
PZTA42
10V
1.5mH
V
U1
1
6
2.2µF
×3
V
IN
18V TO 72V
V
IN
33k
2
5
•
•
V
R2
V
OUT
12V
13A
HAT2173
×2
PA2050.103
HAT2169
33µF
330µF
FG
7
10
•
CG
0.22µF
BAS521
680µH
+
560R
220pF
GATE
FG
470pF
PE-68386
1µF
10k
1k
22k
7.5V
BCX55
10k
47k
CG
LTC3900
CS
+
CS
–
CG
V
CC
SYNC
TIMER
GND
FG
1
2
3
4
8
7
6
5
•
•
3900 TA05a
V
OUT
1µF
2.2nF
1.2k
BAS516
470R
PS2801-1 LT4430
7.87k
18.2k
348k
10pF
10nF
V
CC
GND
OC
OPTO
COMP
FB
1
2
3
6
5
4
LTC3900
17
3900fb
Typical applicaTions
Synchronous Forward Converter With Pulse Skip Mode
The Discontinuous Current Mode (DCM) Operation of Circuit is About 10% More Efficient
with 1A-2A Loads. The No Load Input Current is 15mA in DCM Versus 90mA in CCM.
3900 TA06a
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
Si7430
22k
S
OUT
133k
V
OUT
3.3V
30A
HA2165
V
OUT
13.3k
442k
22.1k
V
FB
V
U1
1µF
82k 1.2k
910Ω
158k
0.1µF
0.47µF
V
FB
BC857
33k
115k
V
IN
T1
PA0369
BAS516
100µF
PA1671
470µF
BAS516
270R
FG
PZTA42
PDZ10B
1.5mH
V
U1
1
6
7
10
2.2µF
V
IN
36V TO 72V
V
IN
1.5nF
0.015R
1µF
82k
2
5
•
•
•
CG
1k
PS2801-1 LT4430
1.96k
18.2k
82.5k
47pF
15nF
560R
PE-68386
S
OUT
BCX55
PDZ7.5B
FG
470pF
220pF
CG
0.22µF
B0540W
B0540W
1µF
10k
10nF
10k
38.3k
V
AUX
R_DCM
3.3M
2.2R
0.02µF
10k
LTC3900
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
+
*
*CONVERTERS THAT USE THE LTC3900 CAN BE FORCED TO OPERATE IN DISCONTINUOUS CURRENT MODE
AT LIGHT LOADS BY OFFSETTING THE CURRENT SENSE INPUT WITH R_DCM RESISTOR.
I
OUT
(A)
0
65
75
95
15 25
3900 TA06b
55
45
5 10
20 30
35
85
EFFICIENCY (%)
CONTINUOUS
CURRENT MODE
DISCONTINUOUS
CURRENT MODE
V
IN
= 48V
V
OUT
= 3.3V
LTC3900
18
3900fb
package DescripTion
.016 – .050
(0.406 – 1.270)
.010 – .020
(0.254 – 0.508)
× 45°
0°– 8° TYP
.008 – .010
(0.203 – 0.254)
SO8 0303
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
1
2
3
4
.150 – .157
(3.810 – 3.988)
NOTE 3
8
7
6
5
.189 – .197
(4.801 – 5.004)
NOTE 3
.228 – .244
(5.791 – 6.197)
.245
MIN
.160
±.005
RECOMMENDED SOLDER PAD LAYOUT
.045 ±.005
.050 BSC
.030 ±.005
TYP
INCHES
(MILLIMETERS)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE
MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS
SHALL NOT EXCEED .006" (0.15mm)
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
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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