Datasheet

Application ideas L5973AD
16/22 Doc ID 9552 Rev 9
6 Application ideas
Figure 13. Positive buck-boost regulator
Figure 14. Buck-boost regulator
Figure 15. Dual output voltage with auxiliary winding
D03IN1455
8
4
5
1
7
L5973AD
C1
10μF
10V
CERAMIC
C2
10μF
25V
CERAMIC
C5
100μF
16V
VOUT=-12V
/
0.6A
VIN = 5V
2.7K
24K
R3
4.7K
C4
22nF
C3
220pF
3
L1 15μH
D1
STPS2L25U
COMP
VCC
OUT
FB
GNDINH
2
6
3.3V
SYNC.
VREF
D03IN1456
8
4
5
1
7
L5973AD
C1
10μF
25V
CERAMIC
C5
47μF
10V
C4
100μF
10V
VOUT=3.3V
/
0.5A
VOUT1=5V/
50mA
VIN = 5V
R3
4.7K
C3
22nF
C2
220pF
3
Lp 22μH
N1/N2=2
D1
STPS25L25U
D2
1N4148
COMP
VCC
OUT
FB
GNDINH
2
6
3.3V
SYNC.
VREF