Diodes AP1520 Manuel d'utilisateur télécharger pdf (Page 6)

AP1520

PWM CONTROL 2A STEP-DOWN CONVERTER

AP1520 Rev. 5 6 of 9 JULY 2009

DS31174 www.diodes.com © Diodes Incorporated

Typical Performance Characteristics (Continued)

AP1520

V

out Ripple

( V

in

= 12V; V

out

= 3.3V; I

out

= 0.1A )

A

P1520

V

out Ripple

( V

in

= 12V; V

out

= 3.3V; I

out

= 2A )

Test Circuit

A

FB

VCC

VSS

EN

open

open

FB

VCC

VSS

EN

+

-

Oscillation

OUTPUT OUTPUT

A

FB

VCC

VSS

EN

+

-

+

-

V

OUTPUT

OCSET

OCSET

OCSET

Enable function test

Feedback function test

Operation function test

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