Datasheet
15
LT3466-1
34661f
TYPICAL APPLICATIO S
U
CTRL1 GND CTRL2
R
T
SW1 SW2V
IN
3V TO 5V
16V
30mA
L2
33µH
1µF
C
OUT1
1µF
C
OUT2
1µF
6 LEDs
L1
33µH
LT3466-1
SHUTDOWN
AND DIMMING
CONTROL 2
C
IN
: TAIYO YUDEN JMK107BJ105
C
OUT1
, C
OUT2
: TAIYO YUDEN GMK316BJ105
L1, L2: 33µH TOKO D52LC
SHUTDOWN
AND DIMMING
CONTROL 1
V
OUT1
FB1
R
FB1
10Ω
R2
24.9k
R1
475k
34661 TA02a
V
OUT2
FB2
63.4k
OUTPUT CURRENT (mA)
0
EFFICIENCY (%)
70
75
302520
34661 TA02b
60
50
65
55
51015
90
85
80
BOOST CONVERTER
LED DRIVER
V
IN
= 3.6V
6 LEDs
V
OUT2
= 16V
Li-Ion Powered Driver for 6 White LEDs and OLED Display
Conversion Efficiency
CTRL1 CTRL2
R
T
SW1 SW2V
IN
3V TO 5V
12V
30mA AT V
IN
= 3V
60mA AT V
IN
= 5V
L2
15µH
C
IN
1µF
C
OUT1
0.47µF
C
OUT2
1µF
38.3k
1%
L1
15µH
LT3466-1
C
IN
: TAIYO YUDEN JMK107BJ105
C
OUT1
: TAIYO YUDEN EMK212BJ474
C
OUT2
: TAIYO YUDEN EMK212BJ105
L1, L2: MURATA LQH32CN150K53
V
OUT1
FB1
R
FB1
10Ω
R2
64.9k
R1
909k
34661 TA01a
V
OUT2
FB2
ONOFFONOFF
4 LEDs
Li-Ion Powered 4 White LEDs Driver and 12V Boost Converter
Efficiency vs Load Current
LOAD CURRENT (mA)
0
60
EFFICIENCY (%)
65
70
75
80
90
10
20 30 40
34661 TA01b
50 60
85
V
IN
= 5V
V
IN
= 3V
4 LEDs/20mA
V
OUT2
= 12V