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參數(shù)資料
| 型號： | TLV803ZDBZR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | PLASTIC, SOT-23, 3 PIN |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 381K |
| 代理商： | TLV803ZDBZR |
GND
V
DD
RESET
RST
TLV803M
Microprocessor
100kW
0.1 mF
5.0V
GND
V
DD
RESET
TLV803S
0.1 mF
3.3V
V
IO
V
CORE
3.3V
100kW
TLV803S
V
DD
3.3V
RESET
GND
47kW RST
Microprocessor
V
CC
SBVS157A
– APRIL 2011 – REVISED JUNE 2011
MONITORING MULTIPLE SUPPLIES
Because the TLV803 has an open-drain output, multiple TLV803 outputs can be directly tied together to form a
logical OR-ing function for the RESET line. Only one pull-up resistor is required for this configuration. Figure 9
shows two TLV803s connected together to provide monitoring of a 3.3-V power rail and a 5.0-V power rail. A
reset is generated if either power rail falls below the threshold voltage of its corresponding TLV803.
Figure 9. Multiple Voltage Rail Monitoring
BIDIRECTIONAL RESET PINS
Some microcontrollers have bidirectional reset pins that act as both inputs and outputs. In a situation where the
TLV803 is pulling the RESET line low while the microcontroller is trying the force the RESET line high, a series
resistor should be placed between the output of the TLV803 and the RESET pin of the microcontroller to protect
against excessive current flow. Figure 10 shows the connection of the TLV803 to a microcontroller using a series
resistor to drive a bidirectional RESET line.
Figure 10. Connection to Bidirectional Reset Pin
Copyright
2011, Texas Instruments Incorporated
7
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| TLV803ZDBZT | 功能描述:監(jiān)控電路 3P Vltg Supervisor 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(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TLV809I50 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-Pin Supply Voltage Supervisors |
| TLV809I50DBVR | 功能描述:監(jiān)控電路 3Pin Supply Vltg Sup 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(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TLV809I50DBVT | 功能描述:監(jiān)控電路 3Pin Supply Vltg Sup 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(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TLV809I50DBZR | 功能描述:監(jiān)控電路 3P Supply Vltg Super 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(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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