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Ap1539, Typical performance characteristics – Diodes AP1539 User Manual

Page 7

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AP1539

18V 4A 300KHz BUCK CONVERTER

AP1539 Rev. 4

7 of 13

OCTOBER 2009

DS31477

www.diodes.com

©

Diodes Incorporated

Typical Performance Characteristics

(Continued)

Current Limit vs. Temperature

(V

IN

= 12V, R

OCSET

= 6.8k)

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

-25

0

25

50

75

100

Ambient Temperature (C)

C

u

rre

n

t L

im

it (A

)

V

OUT

Ripple

(V

IN

=12V, V

OUT

=3.3V, I

OUT

=0.1A)

V

OUT

Ripple

(V

IN

=12V, V

OUT

=3.3V, I

OUT

=4.0A)

Load Transient Response

(V

IN

=12V, V

OUT

=3.3V, I

OUT

=0.1~4A)