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參數資料
| 型號： | TPS3705-33Y |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, UUC8 |
| 封裝： | DIE-8 |
| 文件頁數： | 12/23頁 |
| 文件大小： | 848K |
| 代理商： | TPS3705-33Y |
TPS3705xx
TPS3707xx
PROCESSOR SUPERVISORY CIRCUITS WITH POWERFAIL
SLVS184C NOVEMBER 1998 REVISED DECEMBER 2005
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description
The TPS3705, TPS3707 family of microprocessor supply-voltage supervisors provide circuit initialization and
timing supervision, primarily for DSP and processor-based systems.
During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the
supply voltage supervisor monitors VDD and keeps RESET active as long as VDD remains below the threshold
voltage VIT+. An internal timer delays the return of the output to the inactive state (high) to ensure proper system
reset. The delay time, tdtyp= 200 ms, starts after VDD has risen above the threshold voltage VIT+. When the supply
voltage drops below the threshold voltage VIT– , the output becomes active (low) again. No external components
are required. All the devices of this family have a fixed-sense threshold voltage VIT– set by an internal voltage
divider.
The TPS3705-xx and TPS3707-xx devices incorporate a manual reset input, MR. A low level at MR causes
RESET to become active.
The TPS370x-xx families integrate a power-fail comparator which can be used for low-battery detection,
power-fail warning, or for monitoring a power supply other than the main supply.
The TPS3705-xx devices have a watchdog timer that is periodically triggered by a positive or negative transition
at WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval,
tt(out) = 1.6 s, WDO becomes active. This event also reinitializes the watchdog timer. Leaving WDI unconnected
disables the watchdog.
The TPS3707-xx devices do not have the Watchdog function, but include a high-level output RESET.
The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in
either 8-pin MSOP or standard SOIC packages. The TPS3705, TPS3707 devices are characterized for
operation over a temperature range of 40
°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
THRESHOLD
VOLTAGE
SMALL OUTLINE
(D)
POWERPAD
-SMALL OUTLINE
(DGN)
MARKING DGN
PACKAGE
CHIP FORM
(Y)
2.63 V
TPS370530D
TPS370530DGN
TIAAT
TPS3705-30Y
2.93 V
TPS370533D
TPS370533DGN
TIAAU
TPS370533Y
4.55 V
TPS370550D
TPS370550DGN
TIAAV
TPS370550Y
40
°C to 85°C
2.25 V
TPS370725D
TPS370725DGN
TIAAW
TPS370725Y
40 C to 85 C
2.63 V
TPS370730D
TPS370730DGN
TIAAX
TPS370730Y
2.93 V
TPS370733D
TPS370733DGN
TIAAY
TPS370733Y
4.55 V
TPS370750D
TPS370750DGN
TIAAZ
TPS370750Y
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS3705-50D | 功能描述:監控電路 4.55V Monitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| TPS3705-50DG4 | 功能描述:監控電路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| TPS3705-50DGN | 功能描述:監控電路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| TPS3705-50DGNG4 | 功能描述:監控電路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| TPS3705-50DGNR | 功能描述:監控電路 4.55V Monitor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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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