Datasheet

LTC3805-5
16
38055fe
TYPICAL APPLICATIONS
Figure 8. 5.5V to 40V to 12V/2A SEPIC Converter
LTC3805-5
0.1µF
4.7µF
BAS516
10k
6.8nF
GND
I
TH
SSFLT
GATE
FB
RUN
FS
V
CC
OC
I
SENSE
SYNC
1
2
3
4
5
10
9
8
7
6
11
T1
10µF
50V
D1
PDS760
4.56µH
BH510-1009
C
IN
10µF
50V
C
OUT
47µF
16V
R4 7.15k
69.8k
80.6k
3.01k
R
SENSE
0.005Ω
38055 F08
Q1
HAT2266
V
OUT
12V
2A
R3
100k
301W
221k
57.6k
V
IN
5.5V T0 40V
PDZ6.8B
MMBT6428LT1
• •
LOAD CURRENT (A)
0.01
40
EFFICIENCY (%)
POWER LOSS (W)
50
60
70
80
0.1 1 10
38055 TA04b
30
20
10
0
90
100
0.5
1.0
1.5
2.0
2.5
0
3.0
3.5
5.5V
10V
20V
30V
40V
EFFICIENCY
POWER LOSS
Efficiency and Power Loss vs Load Current