Datasheet

18
LT3466
3466fa
TYPICAL APPLICATIO S
U
2 Li-Ion Cells to 10/10 White LEDs Conversion Efficiency
CTRL1 CTRL2
R
T
SW1 SW2V
IN
6V TO 9V
L2
47µH
C
IN
1µF
C
OUT1
0.47µF
C
OUT2
0.47µF
L1
47µH
LT3466
C
IN
: TAIYO YUDEN LMK212BJ105
C
OUT1
, C
OUT2
: TAIYO YUDEN UMK316BJ474
L1, L2: TOKO A914BYW-470M
V
OUT1
FB1
R
FB1
10Ω
R
FB2
10Ω
63.4k
1%
3466 TA09a
V
OUT2
FB2
OFF ON
OFF ON
LED CURRENT (mA)
0
EFFICIENCY (%)
70
75
80
20
3466 TA09b
65
60
50
5
10
15
55
90
85
V
IN
= 7V
10/10 LEDs
2 Li-Ion Cells to 16/16 White LEDs
CTRL1 CTRL2
R
T
SW1 SW2V
IN
6V TO 9V
V
LED1
16
LEDs
16
LEDs
V
LED2
C
IN
1µF
C3
0.22µF
38.3k
1%
C6
0.22µF
C4
0.1µF
C1
0.1µF
L1
47µH
L2
47µH
D1
D2
C2
0.1µF
C5
0.1µF
D4
D3
LT3466
C
IN
: TAIYO YUDEN LMK212BJ105
C1, C2, C4, C5: TAIYO YUDEN UMK212BJ104
C3, C6: TAIYO YUDEN UMK316BJ224
D1-D4: PHILIPS BAV99
L1, L2: TOKO A914BYW-470M
V
OUT1
FB1
R
FB1
10Ω
R
FB2
10Ω
3466 TA10a
V
OUT2
FB2
OFF ONOFF ON
LED CURRENT (mA)
0
EFFICIENCY (%)
70
75
80
20
3466 TA11b
65
60
50
5
10
15
55
90
85
V
IN
= 7V
16/16 LEDs
Conversion Efficiency