E-L5970D Datasheet, PDF (9/16 Pages) STMicroelectronics – Up to 1A step down switching regulator

L5970D
5
Application circuit
Application circuit
Figure 14. Demo board application circuit
VREF
3.3V
6
1
VIN = 4.4V to 25V
VCC
8 _L5970D
SYNC. 2
C1
10µF
25V
CERAMIC
COMP
C4
22nF
4
3
INH.
C3
220pF
R3
4.7K
5
7
GND
OUT ^{L1 33µH}
VOUT=3.3V
D1
STPS2L25U ^R1
FB
5.6K
C2
100µF
10V
R2
3.3K
D03IN1437
Table 5. Component list
Reference
Part number
C1
GRM32DR61E106KA12L
C2
POSCAP 10TPB100M
C3
C1206C221J5GAC
C4
C1206C223K5RAC
R1
R2
R3
D1
STPS2L25U
L1
DO3316P-333
Description
10µF, 25V
100µF, 10V
220pF, 5%, 50V
22nF, 10%, 50V
5.6K, 1%, 0.1W 0603
3.3K, 1%, 0.1W 0603
4.7K, 1%, 0.1W 0603
2A, 25V
33µH, 2A
Manufacturer
MURATA
Sanyo
KEMET
KEMET
Neohm
Neohm
Neohm
STMicroelectronics
COILCRAFT
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