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Rev.1.4 Oct.17, 2019

AX3484



APPLICATION CIRCUIT

AX3484

IN

EN

SS

GND

BS

SW

FB

COMP

INPUT

C1

10μF/25V

R4

100kΩ

C5

10nF

L1

10uH

R1

25.7k

R2

10k

C2

10

μF/6.3V×2

OUTPUT

3.3V

3A

C3

3.3nF

R3

2.2k

C4

0.1μF

R5

100

VOUT=VFB × (

2

R

1

R

+

1

), VFB = 0.925V, R2 suggest 10k~30KΩ

Table Recommended Component Selection

VIN (V) VOUT (V) R1 (KΩ) R2 (KΩ) R3 (KΩ) C3 (nF) L1 (μH) COUT (μF)

12

5

44.1

10

2.2

3.3

15

10 X 2

5 or 12

3.3

25.7

10

2.2

3.3

10

10 X 2

5 or 12

1.8

9.5

10

2.2

3.3

4.7

10 X 2

5 or 12

1.2

3

10

2.2

3.3

3.3

10 X 2

5 or 12

1

0.81

10

2.2

3.3

2.2

10 X 2