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L5972D Datasheet(PDF) 7 Page - STMicroelectronics

Part # L5972D
Description  2A switch step down switching regulator
PDF  15 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5972D Datasheet(HTML) 7 Page - STMicroelectronics

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L5972D
Application circuit
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5
Application circuit
In figure 8 is shown the demo board application circuit for the device in SMD version, where
the input supply voltage, Vcc, can range from 4.4V to 25V due to the rated voltage of the
input capacitor and the output voltage is adjustable from 1.235V to Vcc.
Figure 9.
Demo board application circuit
Table 5.
Component list
Reference
Part number
Description
Manufacturer
C1
GRM32DR61E106KA12L
10
µF, 25V
MURATA
C2
POSCAP 10TPB100M
100
µF, 10V
Sanyo
C3
C1206C221J5GAC
220pF, 5%, 50V
KEMET
C4
C1206C223K5RAC
22nF, 10%, 50V
KEMET
R1
5.6K, 1%, 0.1W 0603
Neohm
R2
3.3K, 1%, 0.1W 0603
Neohm
R3
4.7K, 1%, 0.1W 0603
Neohm
D1
STPS2L25U
2A, 25V
ST
L1
DO3316P-333
33
µH, 2.1A
COILCRAFT
D03IN1438
8
2
4
5
1
7
L5972D
C1
10
µF
25V
CERAMIC
C2
100
µF
10V
VOUT=3.3V
VIN = 4.4V to 25V
R1
5.6K
R2
3.3K
R3
4.7K
C4
22nF
C3
220pF
3
L1 33
µH
6
D1
STPS2L25U
COMP
VCC
OUT
FB
GND



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