Datasheet

LT3741/LT3741-1
24
37411fg
For more information www.linear.com/LT3741
www.linear.com/LT3741
LT 1117 REV G • PRINTED IN USA
 ANALOG DEVICES, INC. 2010
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
1µF
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
1µF
SS
R
HOT
45.3k
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.