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L5973D Datasheet(PDF) 16 Page - STMicroelectronics

Part # L5973D
Description  2A switch step down switching regulator
PDF  21 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5973D Datasheet(HTML) 16 Page - STMicroelectronics

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Application ideas
L5973AD
16/21
6
Application ideas
Figure 12. Positive Buck-Boost regulator
Figure 13. Buck-Boost regulator
Figure 14. Dual output voltage with auxiliary winding
D03IN1455
8
4
5
1
7
L5973AD
C1
10
µF
10V
CERAMIC
C2
10
µF
25V
CERAMIC
C5
100
µF
16V
VOUT=-12V/
0.6A
VIN = 5V
2.7K
24K
R3
4.7K
C4
22nF
C3
220pF
3
L1 15
µH
D1
STPS2L25U
COMP
VCC
OUT
FB
GND
INH
2
6
3.3V
SYNC.
VREF
D03IN1456
8
4
5
1
7
L5973AD
C1
10
µF
25V
CERAMIC
C5
47
µF
10V
C4
100
µF
10V
VOUT=3.3V/
0.5A
VOUT1=5V/
50mA
VIN = 5V
R3
4.7K
C3
22nF
C2
220pF
3
Lp 22
µH
N1/N2=2
D1
STPS25L25U
D2
1N4148
COMP
VCC
OUT
FB
GND
INH
2
6
3.3V
SYNC.
VREF



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