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Axelite Confidential Materials, do not copy or distribute without written consent.

Rev.2.1 Oct.08, 2019

AX3102

Example:

ISW = (0.13uA x 1.3k + 0.095)/ 0.055=4.8A

ISW = (0.13x 1.3 + 0.095)/ 0.055= 4.8A

Setting the Output Voltage

Application circuit item shows the basic application circuit with AX3102 adjustable

output version. The external resistor sets the output voltage according to the following

equation:











 





2

1

1

8

.

0

R

R

V

V

OUT

Table 1 Resistor select for output voltage setting

VOUT

R2

R1

5V

1.3K

6.8K

5.6K

30K

3.3V

1.5K

4.7K

5.6K

18K

2.5V

2.2K

4.7K

5.6K

12K

1.8V

2K

2.5K

1.5V

2.2K

2.0K

1.2V

3K

1.5K

1.0V

3K

0.75K

R2 setting 5.6k that System Operation Current (No load) can be reduce to under 4mA.

C2

470uF

C3

0.1uF

C4

470uF

1

2

L1

22uH

R1

30K

R2

5.6K

VIN>+9V

ON/OFF

C1

1nF

VOUT = 5V/3A

R3

1.3K

R4

100K

D1

B340

C8

0.1uF

FB

1

EN

2

OCSET

3

VCC

4

SW

5

SW

6

VSS

7

VSS

8

AX3102