Datasheet

LT3741/LT3741-1
20
37411fg
For more information www.linear.com/LT3741
TYPICAL APPLICATIONS
20A LED Driver
EN/UVLOEN/UVLO
HG
V
IN
CBOOT
V
REF
CTRL1
CTRL2
LT3741
RT
SYNC
SW
LG
GND
VC
SENSE
+
SENSE
–
V
CC_INT
150nF
L1
1.1µH
22µF
R1
2.5mΩ
FB
10nF
82.5k
4.7nF
82.5k
47.5k
L1: MVR1261C-112ML
M1: VISHAY SiR462DP
M2: VISHAY SiR462DP
R1: VISHAY WSL25122L500FEA
3741 TA03
12.1k
2.2µF
R
NTC
470k
100µF
M1
M2
V
IN
12V TO 36V
V
OUT
6V, 20A MAXIMUM
680µF
D1
1µF
SS
R
HOT
45.3k
CONTROL
INPUT
33nF
10Ω 10Ω
LED Current Waveforms 10A to
20A Current Step
CTRL1
1V/DIV
I
LED
5A/DIV
1ms/DIV
3741 TA03b
0.75V
1.5V
10A
20A
10A Single-Cell Lithium-Ion Battery Charger
EN/UVLO
CTRL1
HG
V
IN
CBOOT
V
REF
CTRL2
LT3741-1
RT
SYNC
SW
LG
GND
VC
SENSE
+
SENSE
–
V
CC_INT
220nF
L1
2.2µH
3.6V
22µF
1%
5mΩ
FB
1nF
82.5k
8.2nF
82.5k
30.1k
3741 TA04
12.7k
R
NTC
470k
33µF
V
IN
24V
V
OUT
4.2V, 10A MAXIMUM
2.2µF
1µF
SS
R
HOT
45.3k
µCONTROLLER
+
22nF
10Ω
L1: IHLP4040DZER2R2M01
M1: RJK0365DPA
M2: RJKO346DPA
10Ω
M1
M2
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