Datasheet

LT3837
25
3837fd
APPLICATIONS INFORMATION
9V – 36V to 3.3V at 10A Isolated Converter
TYPICAL APPLICATION
Figure 9. High Current Paths
T2
T1
C
R
C
VIN
MS
MP
GATE
TURN-ON
GATE
TURN-ON
R
SENSE
• •
C
VCC
SG
V
CC
GND
LT3825
PG
V
CC
V
CC
V
CC
V
IN
GND
LT3825
GATE
TURN-OFF
GATE
TURN-OFF
Q4
Q3
C
OUT
3837 F09
OUT
•
•
•
•
•
100k
10k
20Ω
5
6
10Ω
3.01k
1%
17.4k
1%
100k
1%
29.4k
1%
0.1µF
10µF
Si4896DY
MMBT3904
BAS70
7.5V
12k
1.37k
1%
150k
V
IN
9V TO
36V
PA0184
Si7336ADP
B0540W
2.2nF
47pF
0.1µF
3.3nF
1nF
t
ON
SYNC
PGDLY
UVLO
SENSE
–
V
C
SENSE
+
R
CMP
ENDLY OSC
LT3837
GND
SFST
FB
V
CC
SG
SG
PG
C
CMP
BAT54
10k
1nF
330Ω
0.1µF
15Ω
1µF
4.7Ω
•
•
•
T1
T1
7/8/9
10/11/12
1/2
3/4
470pF
39Ω
8mΩ
20k
SG
220µF
6TPE220MI
47µF × 3
0.1µH
FP2S-100-R
V
OUT
3.3V AT 10A
3837 TA02
PIN 2 TO 4, 6T OF 4 × 25AWG
PIN 5 TO 6, 7T OF 32AWG
PIN 10/11/12 TO 7/8/9, 2T OF 7MIL C
U
FOIL
PIN 1 TO 3, 6T OF 4 × 25AWG
TAPE
T1: EFD20-3F3 (L
P
= 5µH)