L5973D
Application circuit
5
Application circuit
In figure 6 is shown the demonstration board application circuit, where the input supply
voltage, V
CC
, can range from 4 V to 25 V due to the rated voltage of the input capacitor and
the output voltage is adjustable from 1.235 V to V
CC
.
Figure 12. Demonstration board application circuit
3.3V
VIN = 4.4V to 25V
VREF
VCC
SYNC.
6
8
2
4
INH
1
OUT
L1 15µH
D1
STPS2L25U
VOUT=3.3V
L5973D
3
7
5
FB
GND
R1
5.6K
C1
10µF
25V
CERAMIC
COMP
C4
22nF
C3
220pF
R3
4.7K
C2
330µF
6.3V
R2
3.3K
D03IN1440
Table 5.
Component list
Part number
GRM32DR61E106KA12L
POSCAP 6TPB330M
C1206C221J5GAC
C1206C223K5RAC
Description
10
µF,
25 V
330
µF,
6.3 V
220 pF, 5%, 50 V
22 nF, 10%, 50 V
5.6 K, 1%, 0.1 W 0603
3.3 K, 1%, 0.1 W 0603
4.7 K, 1%, 0.1 W 0603
STPS2L25U
DO3316P-153
2 A, 25 V
15
µH,
3 A
Manufacturer
Murata
Sanyo
KEMET
KEMET
Neohm
Neohm
Neohm
ST
COILCRAFT
Reference
C1
C2
C3
C4
R1
R2
R3
D1
L1
9/17
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