Diodes AP1520 - Manual (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 Vout Ripple
( V
in
= 12V; V
out
= 3.3V; I
out
= 0.1A )
AP1520 Vout Ripple
( V
in
= 12V; V
out
= 3.3V; I
out
= 2A )
Test Circuit
A
FB VCC
VSS
EN
open
open
FB VCC
VSS
EN
+
-
Os
ci
lla
tio
n
OUTPUT OUTPUT
A
FB VCC
VSS
EN
+
-
+
-
V
OUTPUT
OCSET
OCSET
OCSET
Enable function test Feedback function test
Operation function test