Datasheet

LT3471
8
3471fb
APPLICATIONS INFORMATION
Supply Current of Figure 2 During
Start-Up without Soft-Start RC Network
Supply Current of Figure 2 During
Start-Up with Soft-Start RC Network
R
SS1
4.7k
R
SS2
4.7k
CONTROL 1
3471 F02
C
SS1
0.33μF
C
SS2
0.33μF
10μF
V
IN
2.6V TO 4.2V
Li-Ion
SHDN/SS1 FB1N
9
0V
1.8V
CONTROL 2
0V
1.8V
8
7
SW1
SW2
LT3471
L2
10μH
L3
15μH
GND
FB1P
V
IN
FB2P
FB2N
V
REF
C2
0.1μF
C3
4.7μF
C
PL
33pF
V
OUT1
7V
V
OUT2
–7V
C1, C2: X5R OR X7R 6.3V
C3, C4: X5R OR X7R 10V
C5: XR5 OR X7R 16V
C
PL
: OPTIONAL
D1, D2: ON SEMICONDUCTOR MBRM-120
L1: SUMIDA CR43-2R2
L2: SUMIDA CDRH4D18-100
L3: SUMIDA CDRH4D18-150
C6
75pF
R2
15k
R3
90.9k
R4
15k
R1
105k
C5
1μF
SHDN/SS2
V
IN
10
1
2
3
5
4
11 6
V
IN
C4
10μF
D2
L1
2.2μH
D1
Figure 2. Li-Ion OLED Driver
0.1ms/DIV
3471 F02b
I
SUPPLY
0.5A/DIV
V
OUT1
2V/DIV
V
IN
= 3.3V
V
IN
> V
SHDN/SS
0.2ms/DIV
3471 F02c
I
SUPPLY
0.5A/DIV
V
OUT1
2V/DIV
V
IN
= 3.3V
V
IN
> V
SHDN/SS