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

Rev.1.5 Nov.06, 2019

AX5510



COMPENSATION TABLE

Frequency(Hz)

L1 (H)

VIN (V)

VOUT (V)

R6 (Ω)

C7 (F)

680K

(FREQ=Low)

6.8u

2.5~4.4

5

10K

1.2n

2.5~5.5

7

15K

470p

2.5~5.5

9

27K

270p

2.5~5.5

12

56K

150p

2.5~5.5

15

150K

120p

2.5~5.5

18

110K

100p

2.5~5.5

21

150K

82p

2.5~5.5

24

100K

47p

1.2M

(FREQ=High)

4.7u

2.5~4.0

5

33K

1n

2.5~5.5

7

39K

390p

2.5~5.5

9

39K

220p

2.5~5.5

12

100K

100p

2.5~5.5

15

130K

68p

2.5~5.5

18

150K

56p

2.5~5.5

21

220K

47p

2.5~5.5

24

390K

39p



APPLICATION INFORMATION

Setting the Output Voltage

Application circuit item shows the basic application circuit with AX5510 adjustable

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

equation:











 





8

1

238

1

R

R

V

V

OUT

2

.

For most applications, R8 is a suggested a value by 10~30KΩ. Place the

resistor-divider as close to the IC as possible to reduce the noise sensitivity.

Soft Start Capacitor

The soft-start function begins from SS pin Voltage=0V to VCC with a 7uA (typ.) constant

current charging to the soft-start capacitor, so the capacitor should be large enough to let the

output voltage reach regulation inside the soft-start cycle. Typical value of soft-start

capacitor range is from 4.7nF to 100nF. After the cycle finished, the load can start to draw

maximum current as required.