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參數(shù)資料
| 型號： | TLE7469 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual Low Drop Voltage Regulator |
| 中文描述： | 雙低壓降穩(wěn)壓器 |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 240K |
| 代理商： | TLE7469 |
TLE 7469
Final Data Sheet
17
Rev. 1.3, 2004-10-28
the closed window is interpreted as a pretrigger failure and results in a reset. After the
closed window the open window with the duration
t
OW
is started again. The open window
lasts at minimum until the trigger process has occurred, at maximum
t
OW
is 32 ms (typ.
value with fast timing).
A HIGH to LOW transition of the watchdog trigger signal on pin WDI is taken as a trigger.
To avoid wrong triggering due to parasitic glitches two HIGH samples followed by two
LOW samples (sample period
t
sam
typ. 0.25 ms) are decoded as a valid trigger (see
Figure 7
). A reset is generated (RO goes LOW) if there is no trigger pulse during the
open window or if a pretrigger occurs during the closed window. The triggering is correct
also, if the first three samples (two HIGH one LOW) of the trigger pulse at pin WDI are
inside the closed window and only the fourth sample (the second LOW sample) is taken
in the open window.
AEA03533.VSD
No Trigger
Closed
W indow
Open
W indow
Trigger
Reset
Ignore
W indow
Always
Always
No Trigger During
Open W indow
Trigger During
Closed W indow
Figure 6
Window Watchdog State Diagram
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| TLE7469_08 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Dual Low Drop Voltage Regulator Ultra low quiescent current consumption < 55 μA |
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| TLE7469G V53 | 功能描述:低壓差穩(wěn)壓器 - LDO Dual LW Drop VLT REG 5/2.6/3.3V 215/200mA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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