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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
12V to One White LED at 200mA Efficiency
CAP LED
D1
V
IN
C2
4.7µF
C1
1µF
L1
15µH
C1, C3: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN LMK316BJ475ML
D1: LUXEON EMITTER LXHL-BWO2
L1: MURATA LQH32CN150
V
IN
3V
PV
IN
12V
R
SENSE
1Ω
3491 TA02a
LT3491
SHUTDOWN
AND
DIMMING
CONTROL
CTRL SW
GND
C3
1µF
Efficiency
CAP LED
D1
V
IN
C2
4.7µF
C1
1µF
L1
15µH
V
IN
3V
PV
IN
12V
R
SENSE
1Ω
3491 TA03a
LT3491
SHUTDOWN
AND
DIMMING
CONTROL
CTRL SW
GND
C3
1µF
C1, C3: TAIYO YUDEN LMK212BJ105MD
C2: TAIYO YUDEN LMK316BJ475ML
D1: LUXEON EMITTER LXHL-BWO2
L1: MURATA LQH32CN150
12V to Two White LEDs at 200mA
LED CURRENT (mA)
50
EFFICIENCY (%)
60
70
80
55
65
75
40 80 120 160
3491 TA02b
200
200 60 100 140 180
LED CURRENT (mA)
60
EFFICIENCY (%)
70
80
90
65
75
85
40 80 120 160
3491 TA03b
200
200 60 100 140 180