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參數(shù)資料
| 型號： | AT1397BN |
| 廠商： | Aimtron Technology Corp. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 6-Channel DC-DC Converter for DSC |
| 中文描述： | 6聲道的DC - DC轉換器的數(shù)碼相機 |
| 文件頁數(shù)： | 19/21頁 |
| 文件大小： | 696K |
| 代理商： | AT1397BN |
AT1397A/B
Preliminary Product Information
6-Channel DC-DC Converter for DSC
SCP Protection Setting (CH3~CH6)
The CSCP comparator detects CH3, CH4, CH5 and CH6 output voltage while the
power converter work at normal condition. At the same time, the voltage level of
CSCP pin is held at low level. If the output load of these converters rapidly
malfunction or short, causing the output voltage to drop, the CSCP comparator detects
that to enable short circuit protection. The time period when short circuit protection
show as follow equation.
Short detection time (T
PE
(s))
T
PE
(s) = 0.9 * C
CSCP
(μF)
Note : It could be disabled short circuit protection function by connecting CSCP pin
into the ground.
Determine the triangular Oscillator Frequency
The triangular oscillator frequency is determined by the timing capacitor (C
T
). It is
difficult to incorporate these non-linear characteristics into the equation. This
difference is caused by characteristics, such as changes in the maximum voltage
amplitude of the sawtooth waveform with the CT value and the circuit delay causing
the maximum amplitude to become large in the case of a high oscillating frequency
even for the same capacitor. In practical use, therefore, the user should read the CT
values from the characteristic curve or should determine an approximate target value
by using the equation.
7F, No.9, Park Avenue II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:
http://www.aimtron.com.tw
1/10/2006
REV:1.0
Email:
service@aimtron.com.tw
19
)
(
41000
C
T
)
(
pF
KHz
f
OSC
=
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