Datasheet

LT3741/LT3741-1
24
37411fe
For more information www.linear.com/LT3741
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com/LT3741
LINEAR TECHNOLOGY CORPORATION 2010
LT 0114 REV E • PRINTED IN USA
relaTeD parTs
PART NUMBER DESCRIPTION COMMENTS
LT3743 Synchronous Step-Down LED Driver
92% Efficiency, I
OUT
to 20A, V
IN
: 5.5V to 36V, I
Q
= 2mA, I
SD
< 1µA, 4mm × 5mm
QFN-28, TSSOP-28E
Typical applicaTion
20V Regulated Output with 5A Current Limit
EN/UVLOEN/UVLO
CONTROL
INPUT
L1: IHLP5050FDER8RZM01
M1: Si7884BDP
M2: SiR470DP
HG
V
IN
CBOOT
V
REF
CTRL1
CTRL2
LT3741-1
RT
SYNC
SW
LG
GND
VC
SENSE
+
SENSE
V
CC_INT
100nF
L1
8.2µH
22µF
10nF
10mΩ
FB
10nF
30.1k
3.9nF
82.5k
187k
10Ω 10Ω
12.1k
220µF
2.2µF
R
NTC
470k
22µF
M1
M2
V
IN
36V
V
OUT
10A MAXIMUM
F
SS
R
HOT
45.3k
EN/UVLOEN/UVLO
CONTROL
INPUT
L1: IHLP5050FDER8RZM01
M1: Si7884BDP
M2: SiR470DP
HG
V
IN
CBOOT
V
REF
CTRL1
CTRL2
LT3741-1
RT
SYNC
SW
LG
GND
VC
SENSE
+
SENSE
V
CC_INT
100nF
L1
8.2µH
22µF
10nF
10mΩ
FB
10nF
30.1k
3.9nF
82.5k
10Ω 10Ω
3741 TA05
2.2µF
R
NTC
470k
22µF
M1
M2
V
IN
36V
F
SS
R
HOT
45.3k