Datasheet

Application ideas L5972D
10/15
6 Application ideas
Figure 17. Positive buck-boost regulator
Figure 18. Buck-boost regulator
Figure 19. Dual output voltage with auxiliary winding
VIN=5V
C1
10uF
10V
Ceramic
D1
STPS2L25U
Vcc
COMP
GND
OUT
FB
L5972D
1
3
7
5
6
4
8
2
R3
4.7k
L1
33uH
24k
2.7k
C3
22nF
C4
100uF
16V
VOUT=12V/0.45A
C2
220pF
D2
STPS2L25U
M1
STN4NE03L
VIN=5V
C1
10uF
10V
Ceramic
D1
STPS2L25U
Vcc
COMP
GND
OUT
FB
L5972D
1
3
7
5
6
4
8
2
R3
4.7k
L1
33uH
2.7k
24k
C4
22nF
C5
100uF
16V
VOUT=-12V/0.45A
C3
220pF
C2
10uF
25V
Ceramic
VIN=12V
C1
10uF
25V
D1
STPS2L25U
Vcc
COMP
GND
OUT
FB
L5972D
1
3
7
5
6
4
8
2
R3
4.7k
C3
22nF
C4
100uF
10V
VOUT=3.3V
C2
220pF
VOUT1=5V
50mA
D2
STPS2L25U
C5
47uF
10V
N1
N2
n=N1/N2=2