Datasheet

18
LT3466-1
34661f
TYPICAL APPLICATIO S
U
Li-Ion to 10 White LEDs and LCD Bias (±8V) with Output Disconnect
Conversion Efficiency
CTRL1 CTRL2
R
T
SW1 SW2V
IN
3V TO 5V
–8V
10mA
8V
10mA
L2
33µH
C
IN
1µF
C
OUT1
1µF
147k
C
IN
: TAIYO YUDEN JMK107BJ105
C
OUT1
: TAIYO YUDEN UMK325BJ105
C
OUT2
, C
OUT3
: TAIYO YUDEN GMK316BJ105
C1, C2: TAIYO YUDEN UMK212BJ104
D1, D2: PHILIPS BAT54S
L1: 68µH TOKO D52LC
L2: 33µF TOKO D52LC
L1
68µH
10 LEDs
LT3466-1
V
OUT1
FB1
R
FB1
16.5
34661 TA05a
V
OUT2
FB2
ONOFFONOFF
C
OUT2
1µF
C
OUT3
1µF
909k
10k
C1
0.1µF
D1
D2
C2
0.1µF
LED CURRENT (mA)
0
72
EFFICIENCY (%)
74
76
78
80
84
2
468
34661 TA05b
10 12
82
V
IN
= 3.6V
10 LEDs
+8V/10mA
–8V/10mA
+8V OUTPUT
10V/DIV
–8V OUTPUT
10V/DIV
2ms/DIVV
IN
= 3.6V
+8V/10mA
–8V/10mA
34661 TA05c
CTRL2
5V/DIV