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ManualsBrandsLINEAR TECHNOLOGY ManualsPMICsPMIC - LED driver DC-DC voltage regulator SC 70 8 Surface-mount
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LT3491
3491fa
TYPICAL APPLICATIO S
U
Li-Ion Driver for Five White LEDs Efficiency
CTRL
V
IN
C2
1µF
C1
1µF
L1
10µH
V
IN
3V TO 5V
R
SENSE
10Ω
3491 TA05a
LT3491
SHUTDOWN AND
DIMMING CONTROL
SW
CAP
LED
GND
C1: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN GMK316BJ105ML
L1: MURATA LQH32CN100
LED CURRENT (mA)
0
35
EFFICIENCY (%)
40
50
55
60
12 14 16 18
80
3491 TA05b
45
2 4 6 8 10 20
65
70
75
V
IN
= 3.6V
5 LEDs
Efficiency
Li-Ion Driver for Three White LEDs
CTRL
V
IN
C2
1µF
C1
1µF
L1
10µH
V
IN
3V TO 5V
R
SENSE
10Ω
3491 TA04a
LT3491
SHUTDOWN AND
DIMMING CONTROL
SW
CAP
LED
GND
C1: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN GMK316BJ105ML
L1: MURATA LQH32CN100
LED CURRENT (mA)
0
35
EFFICIENCY (%)
40
50
55
60
12 14 16 18
80
3491 TA04b
45
2 4 6 8 10 20
65
70
75
V
IN
= 3.6V
3 LEDs