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L5985TR Datasheet(PDF) 29 Page - STMicroelectronics

Part # L5985TR
Description  2 A step-down switching regulator
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5985TR Datasheet(HTML) 29 Page - STMicroelectronics

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L5985
Application information
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5.7
Application circuit
In Figure 18 the demonstration board application circuit is shown.
Figure 18.
Demonstration board application circuit
Table 9.
Component list
Reference
Part number
Description
Manufacturer
C1
GRM31CR61E106KA12
10
μF, 25 V
Murata
C2
GRM31CR61C226KE15B
22
μF, 16 V
Murata
C3
2.2 nF, 50 V
C4
10 nF, 50V
C5
220 pF, 50 V
C6
68 nF, 25 V
R1
4.99 k
Ω, 1%, 0.1 W 0603
R2
1.1 k
Ω, 1%, 0.1 W 0603
R3
330
Ω, 1%, 0.1 W 0603
R4
2.49 k
Ω, 1%, 0.1 W 0603
R5
100 k
Ω, 1%, 0.1 W 0603
L1
7447779006
6.8
μH, 30%, 2.91 A
Wurth elektronik
D1
STPS2L25V
2 A, 25 V
STMicroelectronics
OUT
FB
SYNCH
INH
GND
COMP
VCC
L5985
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 6.8uH
C3 2.2nF
R3 330
C5 220pF
R4 2.49K
FSW
8
3
7
6
4
5
2
1
C2
22uF
C6
68nF
COMP
1
Vout=3.3V
VIN=3.3V to 18V
R5 100K
OUT
FB
SYNCH
INH
GND
COMP
VCC
L5985
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 6.8uH
C3 2.2nF
R3 330
C5 220pF
R4 2.49K
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
L5985
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 6.8uH
C3 2.2nF
R3 330
C5 220pF
R4 2.49K
FSW
8
3
7
6
4
5
2
1
C2
22uF
C6
68nF
COMP
1
Vout=3.3V
VIN=3.3V to 18V
R5 100K
OUT
FB
SYNCH
INH
GND
COMP
VCC
L5985
C1
10uF
C4 10nF
R1 4.99K
R2 1.1K
D1
STPS2L25U
L1 6.8uH
C3 2.2nF
R3 330
C5 220pF
R4 2.49K
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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