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Rev.1.1 Oct.16, 2019

AX3165/A



APPLICATION CIRCUIT

R1

R4

VFB = 1.0V ; R4 suggest 0.8K ~ 3K

VOUT = VFB x (1 +

)

EL Capacitor Compensation Table

COUT ESR Range

FREQ

VOUT

R2

C9

C2

L1

30m~80mΩ

100KHz

5V

1K

47nF 2200pF

68uH

250KHz

2.2K 47nF

560pF

33uH

80m~300mΩ

100KHz

1K

47nF 2200pF

68uH

250KHz

2.2K 47nF

470pF

33uH



FUNCTION DESCRIPTIONS

EN

This pin can be supplied shutdown function. It is inside pull high function. Allow the

switching regulator circuit to be shutdown pulling this pin below a 0.8V threshold voltage.

SS

This pin can be supplied soft start function. The pin must be connected a capacitor to

ground. There is a 10uA current to charge this capacitor, vary the different capacitor value

to control soft start time.

COMP

Compensation pin. For EL output capacitor application, the COMP pin connects R2

and C9 to ground for all condition; please refer the compensation table.