![](/html/Anachip/283880/page5.png)
PWM Control 3A Step-Down Converter
AP1537
Typical Performance Characteristics (Continued)
AP1537 Vout Ripple
(Vin=12V; Vout=5V; Iout=0.2A)
AP1537 Vout Ripple
(Vin=12V; Vout=5V; Iout=3A)
Test Circuit
open
VCC OUTPUT FB
open
Comp open
A
EN VSS
Enable function test
A
VCC OUTPUT FB
Comp
+
-
EN VSS
Feedback function test
OUTPUT
VCC
FB
+
-
EN VSS Comp
+
V
-
Operation function test
Anachip Corp.
www.anachip.com.tw
5/7
Rev. 1.3 May 09, 2006