Diodes AP1609 - Manual (Page 5)

AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
AP1609 Rev. 2 5 of 9 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Typical Application Circuit
(1) Normal Circuit
LX V
CC
FB
GND
CE
2.5V~6V
PGND
SS340
R
1
R
2
C
BP
0.1u 100u
Vout
0.1u
330K
3.3u 0.1u
100
100u
V
out
= 1.23 (1+ ) , R
2
= 10K~100K
R
1
R
2
×
10uH
Option
(2) HV Circuit
LX V
CC
FB
GND
CE
above 5.5V
PGND
SS340
R
1
R
2
0.1u 470u
15V
0.1u
330K
ZD
0.1u
R
470u
V
out
= 1.23 (1+ ) , R
2
= 10K~100K
R
1
R
2
×
3.3u
10uH
5V
C
BP
Option