AST1S31HF Datasheet, PDF (25/33 Pages) STMicroelectronics – Internal soft-start and enable

AST1S31HF
8
Demonstration board
Demonstration board
VIN
C3
1uF
Figure 11. Demonstration board schematic
U1 AST1S31HF
1
VIN_A
2
EN
3
FB
4
AGND
8
PGND
7
SW
6
VIN_SW
5
PGOOD
L1
0.91uH
C1
47uF
VOUT
C2
22uF
R2
200K
R3
R1
10K
100K
Reference
U1
L1
C1
C2
C3
C4
R1
R2
R3
Table 9. Component list
Part number
Description
AST1S31HF
DRA73 1R0 R
GCM32ER70J476ME16
GCM32ER71A226KE12
0.91 µH, Isat = 8.22 A
47 µF 6.3 V X7R
22 µF 10 V X7R
1 µF 25 V X7R
NC
100 k1%
200 k 1%
10 k 1%
Manufacturer
STM
Coiltronics
MURATA
MURATA
DocID026968 Rev 2
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