AT1452
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
+
DUTY
1.15
RDUTY (KΩ) =
(
15
1.1 ) − 1.073
VDUTY
Example:
Set duty cycle is 50%
VDUTY
= 0.3 + 0.5
1.15
= 0.734
RDUTY
=
(
15
≈ 35.2KΩ
1.1 ) − 1.073
0.734
Output Voltage Setting
VOUT
=
R1 + R2
R2
×
VFB
VFB = 1.1V
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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