L5987 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L5987' PDF : 40 Pages View PDF
Application information
L5987
6.7
Application circuit
In Figure 19 the demonstration board application circuit is shown.
Figure 19. Demonstration board application circuit
Vin=2.9V - 18V
C1
22u
25V
VCC 8
C6
220n
25V
INH
3
L5987/A
1 OUT
2 SYNCH
GND 7
6
FSW
4
COMP
5 FB
R5
150k
R4
2K
C4 10hF
L1 5.2uH MSS1038
D1
STPS2L25
R1 4.99K
Vout=1.8V
C2
22u
25V
C5 330pF R2
2.49k
R3
330
C3 2.2nF
Reference
C1
C2
C3
C4
C5
C6
R1
R2
R3
R4
R5
D1
L1
Table 9. Component list
Part number
Description
GRM32ER61E226KE15
GRM32ER61E226KE15
STPS2L25V
MSS1038-522NL
22 F, 25 V
22 F, 25 V
2.2 nF, 50 V
10 nF, 50 V
330 pF, 50 V
220 nF, 25 V
4.99 k, 1%, 0.1 W 0603
2.49 k, 1%, 0.1 W 0603
330 , 1%, 0.1 W 0603
2 k, 1%, 0.1 W 0603
100 k
2 A DC, 2 5V
5.2 H, 30%, 5.28 A,
DCRMAX = 22 m
Manufacturer
MURATA
MURATA
STMicroelectronics
Coilcraft
32/40
DocID14972 Rev 4
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