AP1539
18V 4A 300KHz BUCK CONVERTER
AP1539 Rev. 4 8 of 13 OCTOBER 2009
DS31477 www.diodes.com © Diodes Incorporated
Test Circuit
A
FBV
CC
V
SS
EN
open
open
FB
EN
+
-
Oscillation
OUTPUT OUTPUT
A
FB
EN
+
-
+
-
V
OUTPUT
OCSET
OCSET
OCSET
Enable function test Feedback function test
Operation function test
V
CC
V
CC
V
SS
V
SS
