- 您现在的位置：买卖IC网 > PDF目录69506 > TPS3705-33DG4 (TEXAS INSTRUMENTS INC) 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 PDF资料下载
参数资料
| 型号： | TPS3705-33DG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | GREEN, PLASTIC, SOIC-8 |
| 文件页数： | 12/23页 |
| 文件大小： | 775K |
| 代理商： | TPS3705-33DG4 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| TPS3707-50DGNG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS3707-50DG4 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS3705-33DR | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TPS3707-30DR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| TPS3707-33DGN | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS3705-33DGN | 功能描述:监控电路 w/ Power-Fail RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TPS3705-33DGNG4 | 功能描述:监控电路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TPS3705-33DGNR | 功能描述:监控电路 2.93V Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TPS3705-33DGNRG4 | 功能描述:监控电路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| TPS3705-33DR | 功能描述:监控电路 Processor with Power-Fail RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。