LTC3805-5 Linear Technology, LTC3805-5 Datasheet - Page 17

• Manufacturer Part Number: LTC3805-5
• Description: Adjustable Frequency Current Mode Flyback DC/DC Controller
• Manufacturer: Linear Technology

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TYPICAL APPLICATIONS
5.5V T0 40V
V
IN
C
10μF
50V
IN
221k
69.8k
6.8nF
57.6k
PDZ6.8B
Figure 8. 5.5V-40V to 12V/2A SEPIC Converter
R4 7.15k
80.6k
Effi ciency and Power Loss vs Load Current
100
90
80
70
60
40
30
20
10
50
10k
0
0.01
0.1μF
EFFICIENCY
1
2
3
4
5
SSFLT
I
FB
RUN
FS
TH
MMBT6428LT1
LOAD CURRENT (A)
0.1
4.7μF
LTC3805-5
POWER LOSS
GND
11
I
SENSE
SYNC
GATE
V
OC
CC
1
10
9
8
7
6
301W
38055 TA04b
BAS516
5.5V
10V
20V
30V
40V
3.01k
100k
R3
10
3.0
2.5
2.0
1.5
0.5
0
3.5
1.0
BH510-1009
•
4.56μH
Q1
HAT2266
R
0.005Ω
10μF
50V
T1
SENSE
•
PDS760
D1
C
47μF
16V
OUT
LTC3805-5
38055 F08
V
12V
2A
OUT
17
38055fa