Datasheet

LT3471
13
3471fb
TYPICAL APPLICATIONS
Single Li-Ion Cell to 5V, 12V Boost Converter
R
SS1
4.7k
R
SS2
4.7k
CONTROL 1
3471 TA03
C
SS1
0.33μF
C
SS2
0.33μF
C1
4.7μF
V
IN
2.6V TO 4.2V
SHDN/SS1 FB1N
9
OV
1.8V
1.8V
0V
CONTROL 2
8
7
SW1
SW2
LT3471
L2
6.8μH
GND
FB1P
V
IN
FB2N
FB2P
V
REF
C2
0.1μF
C3
10μF
C5
100pF
C6
220pF
V
OUT1
5V
900mA IF V
IN
= 4.2V
630mA IF V
IN
= 3.3V
425mA IF V
IN
= 2.6V
V
OUT2
12V
300mA IF V
IN
= 4.2V
210mA IF V
IN
= 3.3V
145mA IF V
IN
= 2.6V
C1-C3: X5R OR X7R 6.3V
C4: X5R OR X7R 16V
D1, D2: ON SEMICONDUCTOR MBRM-120
L1: SUMIDA CR43-3R3
L2: SUMIDA CR43-6R8
R1
20k
R2
4.99k
R3
54.9k
R4
4.99k
SHDN/SS2
V
IN
10
1
2
3
4
5
11 6
V
IN
C4
10μF
L1
3.3μH
D1
D2