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參數資料
| 型號： | L9824 |
| 文件頁數： | 5/11頁 |
| 文件大小： | 229K |
| 代理商： | L9824 |
Figure 1
: Timing Diagram with FunctionModes.
Figure 2
:Maximum R
OUT
- Characteristics.
Figure3
: Typical ShortCurrent
Characteristics.
T
SC
9)
T
RON
I
SCL
I
TH
R
DSON
Region
I
SC
0
40
t(ms)
D95AT168
8)
TRUTH TABLE FOR THE CONTROL INPUTS
Enable V
E
Transfer V
TR
Mode Symbol
Function Mode
L
H
RM
READ MODE (output monitoring)
L
L
TM
TRANSFER MODE (input data transferred to output)
H
L
HM
HOLD MODE (output corresponds to the data latch)
H
H
SM
STANDBY MODE (all outputs open)
.
As a consequenceof the filter functionthe follo-
wing features are given respectively has to be
considered(refer to timingabove):
.
For a delaybetween RM and HMup to t
d
< tmin
the parasitic TM will be supressed.
.
To obtainthetransferfunction surely bothmode
inputsbe ”Low” forat least t
TM
t
fmax
.
.
ThereforethechangefromTMtoanyothermode
causes an additional delay t
f
that is the internal
filter time.
.
TheparasiticSMtime istooshorttoinfluencethe
outputs andis hence negligible.
I
TH
: Exceeding the threshold activates the current limitation
circuit and timer.
T
RON
: Must be longer than 20ms because for shorter times even
currents higher than ITH do not trigger the current limitation.
L9824
5/11
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