Diodes AP1605 - Manual (Page 5)

AP1605
PWM/PFM DUAL-MODE STEP-DOWN SWITCHING
REGULATOR
AP1605 Rev. 2 5 of 8 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Application Circuit
（1） Normal Application
+
-
C
C R A
R B
D1
OUT
V SS
FB
PV CC SW
V CC
R VCC
C VCC
AP1605
=~200K
CE
R
CE
C
CE
)
R
R
(1 VFB Vout
B
A
+ × =
100K
0.1uF
（2） Application with Short Circuit Protection
AP 1605
+
-
V
SS
CE
C
C
R
A
R
B
D1
V OUT : 1.8V
FB
PV CC SW
V CC
D VCC
1N4148 for above 5V Vin and
Schottky for below
5V Vin
C VCC
0.1uF
C PVCC
100 uF
C ON /OFF
0.2uF
R ON /OFF
3.5M
R Bias
10 M
R SENCE
1M
C OUTPUT
100 uF
V IN : 2.5V~7V
)
R
R
(1 VFB Vout
B
A
+ × =
=~10K