Datasheet

LT3591
12
3591f
TYPICAL APPLICATIONS
LED CURRENT (mA)
EFFICIENCY (%)
60
70
85
80
55
65
75
10
3491 TA02b
2005 15
NO SCHOTTKY
EXTERNAL SCHOTTKY
V
IN
= 3.6V
10 LEDs
LED CURRENT (mA)
0
EFFICIENCY (%)
65
70
50
3591 TA03b
60
10
20
30 40
80
75
V
IN
= 3.6V
4 LEDs
Li-Ion Driver for Ten White LEDs Effi ciency
Li-Ion Driver for Four White LEDs at 50mA
Effi ciency
SW
V
IN
L1
22µH
D1
*OPTIONAL
V
IN
3V TO 5V
R
SENSE
10Ω
3591 TA02a
LT3591
SHUTDOWN
AND DIMMING
CONTROL
CTRL
CAP
LED
GND
C2
2.2µF
C1
1µF
C1:TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H225KA88
L1: TAIYO YUDEN NR4018T220M
D1: PHILLIPS PMEG4005AEA
CTRL
V
IN
L1
10µH
V
IN
3V TO 5V
R
SENSE
3.92Ω
3591 TA03a
LT3591
SHUTDOWN AND
DIMMING CONTROL
SW
CAP
LED
GND
C2
4.7µF
C1
1µF
C1:TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H475KA12L
L1: MURATA LQH32CN100K53