L5973 Просмотр технического описания (PDF) - STMicroelectronics
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производитель
L5973 Datasheet PDF : 10 Pages
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L5973D
APPLICATION IDEAS
Figure 14. Positive Buck-Boost regulator
VIN=5V
C1
10uF
10V
Ceramic
Vcc
8
C2
220pF
COMP
4
L5973D
2 67
C3
22nF
R3
4.7k
SYNC VREF GND
3.3V
OUT
1
FB
5
3
D1
STPS2L25U
INH
L1
15uH
D2
STPS2L25U
VOUT=12V/0.6A
24k
M1
STN4NE03L
C4
100uF
16V
2.7k
Figure 15. Buck-Boost regulator
VIN=5V
Vcc
8
OUT
1
C1
10uF
10V
Ceramic
C2
10uF
25V
C3
Ceramic 220pF
COMP
4
L5973D
2 67
C4
22nF
R3
4.7k
SYNC VREF GND
3.3V
FB 2.7k
5
3
INH
24k
L1
15uH
D1
STPS2L25U
C5
100uF
16V
VOUT=-12V/0.6A
Figure 16. Dual output voltage with auxiliary winding
D2
N1/N2=2 1N4148
VOUT1=5V
50mA
VIN=12V
C1
10uF
25V
Ceramic
VCC
8
OUT
1
C2
220pF
COMP
4
L5973D
C3
22nF
2 67
SYNC VREF GND
R3
4.7k
3.3V
FB
5
3
INH
Lp=22uH
D1
STPS25L25U
C4
100uF
10V
VOUT=3.3V
0.5A
C5
47uF
10V
8/10
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