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

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