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參數(shù)資料
| 型號： | TPS3813I50MDBVREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| 封裝： | 3 X 3 MM, PLASTIC, SOT-23, 6 PIN |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 446K |
| 代理商： | TPS3813I50MDBVREP |
www.ti.com
VDD
RESET
WDI
WDR
WDT
GND
TPS3813
VDD
RESET
I/O
GND
VDD
Position 1
See Note A
Position 2
See Note B
VDD
Position 3
See Note C
Position 5
See Note E
C(ext)
Position 4
See Note D
VDD
0.1
F
0.1
F
R
uC
SGLS343A – MAY 2006 – REVISED MAY 2006
If the window watchdog ratio pin (WDR) is set to VDD, Position 1 in Figure 3, then the lower window frame is a
value based on a ratio calculation of the overall window timeout size: For the watchdog timeout pin (WDT)
connected to GND, it is a ratio of 1:124.9, for WDT connected to VDD, it is a ratio of 1:127.7, and for an external
capacitor connected to WDT, it is a ratio of 1:64.5.
If the window watchdog ratio pin (WDR) is set to GND, Position 2, the lower window frame will be a value based
on a ratio calculation of the overall window timeout size: For the watchdog timeout pin (WDT) connected to
GND, it will be a ratio of 1:31.8, for WDT connected to VDD it will be 1:32, and for an external capacitor
connected to WDT it will be 1:25.8.
The watchdog timeout can be set in two fixed timings of 0.25 seconds and 2.5 seconds for the window or can by
programmed by connecting a external capacitor with a low leakage current at WDT.
Example: If the watchdog timeout pin (WDT) is connected to VDD, the timeout will be 2.5 seconds. If the window
watchdog ratio pin (WDR) is set in this configuration to a ratio of 1:127.7 by connecting the pin to VDD, the lower
boundary is 19.6 ms.
A.
Watchdog window ratio
B.
Watchdog timeout set to typical 2.5 sec
C.
Watchdog timeout programmed by external capacitor
D.
Watchdog timeout set to typical 0.25 sec
Figure 3. Application Example
6
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| TPS3813I50QDBVRQ1 | 功能描述:監(jiān)控電路 Proc Sup Circuit W/ Window Watchdog RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3813I50QDBVRSV | 制造商:Texas Instruments 功能描述: |
| TPS3813J25DBVR | 功能描述:監(jiān)控電路 w/Prog Watchdog Window RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3813J25DBVRG4 | 功能描述:監(jiān)控電路 w/Prog Watchdog Window RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3813J25DBVT | 功能描述:監(jiān)控電路 w/Prog Watchdog Window RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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