Datasheet

LT3517
16
3517fg
For more information www.linear.com/LT3517
5.5V SEPIC Converter with Short-Circuit Protection
SW
VC GND SS
CTRL
SYNC
SHDN
TGEN
V
REF
FB
TG
ISP
ISN
RT
V
OUT
5.5V
350mA
V
IN
3V
R1
221k
C2
10µF
C5
10µF
C3
0.1µF
C4
10nF
SHDN
PWM
LT3517
V
IN
D1
R2
49.9k
R
T
6.04k
2MHz
R3
10k
3517 TA07a
C2
2.2µF
L1
4.3µH
L2
4.3µH
R
SENSE
0.22Ω
C1: KEMET C0805C225K4RAC
C2, C5: KEMET C1206C106K4RAC
C3: MURATA GRM21BR71H104KA01B
C4: MURATA GCM033R71A103KA03
D1: ZETEX ZLLS1000TA
L1, L2: TOKO B992AS-4R3N
Efficiency
TYPICAL APPLICATION
I
LOAD
(mA)
0
30
EFFICIENCY (%)
40
50
60
70
80
90
50 100 150 200
3517 TA07b
250 300 350