LT3591
TYPICAL APPLICATIONS
Li-Ion Driver for Seven White LEDs
Conversion Ef?ciency
SHUTDOWN AND
DIMMING CONTROL
CTRL
85
80
V IN = 3.6V
7 LEDs
V IN
3V TO 5V
L1
22 μ H
V IN
LT3591
CAP
R SENSE
10 ?
75
70
C1
1 μ F
SW
GND
LED
C2
2.2 μ F
65
60
55
50
0
5
10
15
20
LED CURRENT (mA)
3591 TA07b
3591 TA07a
C1: TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H225KA88
L1: TAIYO YUDEN NR4018T220M
Li-Ion Driver for Eight White LEDs
Conversion Ef?ciency
SHUTDOWN AND
DIMMING CONTROL
85
V IN = 3.6V
8 LEDs
80
CTRL
V IN
3V TO 5V
L1
22 μ H
V IN
LT3591
CAP
R SENSE
10 ?
75
70
C1
1 μ F
SW
GND
LED
C2
2.2 μ F
65
60
55
0
5
10
15
20
LED CURRENT (mA)
3591 TA08b
3591 TA08a
C1: TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H225KA88
L1: TAIYO YUDEN NR4018T220M
3591f
14
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