Datasheet

LT3741/LT3741-1
19
37411fg
For more information www.linear.com/LT3741
20A Super Capacitor Charger with 5V Regulated Output
EN/UVLOEN/UVLO
HG
V
IN
CBOOT
V
REF
CTRL1
CTRL2
LT3741
RT
SYNC
SW
LG
GND
VC
SENSE
+
SENSE
–
V
CC_INT
100nF
L1
1.0µH
22µF
33nF
R1
2.5mΩ
FB
10nF
47.5k
L1: IHLP4040DZER1R0M01
M1: RJK0365DPA
M2: RJK0346DPA
R1: VISHAY WSL25122L500FEA
4.7nF
82.5k
50k
38.3k
10Ω 10Ω
3741 TA02
12.1k
150µF
×2
2.2µF
R
NTC
470k
100µF
M1
M2
V
IN
10V TO 36V
V
OUT
20A MAXIMUM
1µF
SS
R
HOT
45.3k
Efficiency and Power Loss
vs Load Current
I
OUT
(A)
0 2 4 6 8 10 12 14 16 18 20 22 24
V
OUT
(V)
3
4
6
5
3741 TA02c
2
1
0
26
V
IN
= 20V
V
OUT
= 5V
I
LIMIT
= 20A
V
OUT
vs I
OUT
LOAD CURRENT (A)
0.1
EFFICIENCY (%)
100
80
60
40
90
50
70
10
3741 TA02b
100
1
LT3741
LT3741-1
V
IN
= 20V
V
OUT
= 5V
TYPICAL APPLICATIONS
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