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L5973D 数据表(PDF) 9 Page - STMicroelectronics

部件名 L5973D
功能描述  2.5 A switch step down switching regulator
PDF  17 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5973D 数据表(HTML) 9 Page - STMicroelectronics

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



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