Datasheet

LT3471
14
3471fb
TYPICAL APPLICATIONS
Li-Ion 20 White LED Driver
R
SS1
4.7k
R
SS2
4.7k
3471 TA04
C
SS1
0.33μF
C
SS2
0.33μF
C1
4.7μF
V
IN
2.6V TO 4.2V
SHDN/SS1 FB1N
9
8
7
SW1
SW2
LT3471
L2
2.2μH
GND
FB1P
V
IN
FB2N
FB2P
V
REF
C2
0.1μF
R1
90.9k
C3
0.22μF
I
OUT1
20mA
C1, C2: X5R OR X7R 6.3V
C3, C4: X5R OR X7R 50V
D1, D2: ON SEMICONDUCTOR MBRM-140
L1, L2: SUMIDA CDRH2D-2R2
R2
10k
4.99Ω
SHDN/SS2
V
IN
10
1
2
3
4
5
11 6
V
IN
C4
0.22μF
L1
2.2μH
D1
D2
I
OUT2
20mA
10 WHITE LEDs
10 WHITE LEDs
4.99Ω
CONTROL 1
OV
1.8V
CONTROL 2
OV
1.8V