AT1453
Preliminary Product Information
Photoflash Capacitor Charger for DSC
DUTY Setting
The DUTY resistor selection depends on Duty Cycle , choose the component using the following
equation:
V
DUTY
(
V
)
=
0.3
+
R
DUTY
(
K
Ω
)
=
DUTY
1.15
15
(
1.1
)
−
1.073
V
DUTY
Example
:
Set duty cycle is 50%
V
DUTY
=
0.3
+
R
DUTY
=
0.5
=
0.734
1.15
15
≈
35.2
K
Ω
1 .1
(
)
−
1.073
0.734
Output Voltage Setting
V
OUT
=
R
1
+
R
2
×
V
FB
R
2
V
FB
=
1.1
V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
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