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L5981 데이터시트(PDF) 29 Page - STMicroelectronics

부품명 L5981
상세설명  1A step-down switching regulator
PDF  37 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L5981 데이터시트(HTML) 29 Page - STMicroelectronics

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Application informations
L5981
29/37
5.7
Application circuit
In Figure 18 the demo board application circuit is shown.
Figure 18.
Demo board application circuit
Table 8.
Component list
Reference
Part number
Description
Manufacturer
C1
GRM31CR61E106KA12
10
µF, 25V
Murata
C2
GRM32ER61E226KE15
22
µF, 25V
Murata
C3
4.7nF, 50V
C4
10nF, 50V
C5
100pF, 50V
C6
68nF, 25V
R1
4.99 k
Ω, 1%, 0.1W 0603
R2
1.1k
Ω, 1%, 0.1W 0603
R3
110
Ω, 1%, 0.1W 0603
R4
5.6 k
Ω, 1%, 0.1W 0603
R5
n.c.
D1
STPS2L25V
2A, 25V
STMicroelectronics
L1
744066330
33
µH, 30%, 2.9A
Wurth Elektronik
OUT
FB
SYNCH
INH
GND
COMP
VCC
L5981
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 33uH
C3 4.7nF
R3 110
C5 100pF
R4 5.6K
FSW
8
3
7
6
4
5
2
1
C2
22uF
C6
68nF
COMP
1
Vout=3.3V
VIN=3.3V to 18V
OUT
FB
SYNCH
INH
GND
COMP
VCC
L5981
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 33uH
C3 4.7nF
R3 110
C5 100pF
R4 5.6K
FSW
8
3
7
6
4
5
2
1
C2
22uF
C6
68nF
COMP
1
Vout=3.3V
VIN=3.3V to 18V



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