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参数资料
| 型号： | TPS3305-33Y |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, UUC8 |
| 封装： | DIE-8 |
| 文件页数： | 10/17页 |
| 文件大小： | 559K |
| 代理商： | TPS3305-33Y |
TPS330518, TPS330525, TPS330533
DUAL PROCESSOR SUPERVISORS
SLVS198A DECEMBER 1998 REVISED DECEMBER 2002
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The product spectrum of the TPS3305 is designed for monitoring two independent supply voltages of
3.3 V/1.8 V, 3.3 V/2.5 V or 3.3 V/5 V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage, as shown in the
following supply voltage monitoring table.
SUPPLY VOLTAGE MONITORING
DEVICE
NOMINAL SUPERVISED VOLTAGE
THRESHOLD VOLTAGE (TYP)
DEVICE
SENSE1
SENSE2
SENSE1
SENSE2
TPS3305-18
3.3 V
1.8 V
2.93 V
1.68 V
TPS3305-25
3.3 V
2.5 V
2.93 V
2.25 V
TPS3305-33
5 V
3.3 V
4.55 V
2.93 V
During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the
supply voltage supervisor monitors the SENSEn inputs and keeps RESET active as long as SENSEn remains
below the threshold voltage VIT+.
An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.
The delay time, td typ = 200 ms, starts after SENSE1 and SENSE2 inputs have risen above the threshold voltage
VIT+. When the voltage at SENSE1 or SENSE2 input drops below the threshold voltage VIT–, the RESET output
becomes active (low) again.
The TPS3305-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative
transition of WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval,
tt(out) = 1.6 s, RESET becomes active for the time period td. This event also reinitializes the watchdog timer.
Leaving WDI unconnected disables the watchdog.
The TPS3305-xx family of devices incorporates a manual reset input, MR. A low level at MR causes RESET
to become active. In addition to the active-low RESET output, the TPS3305-xx family includes an active-high
RESET output.
The TPS3305-xx devices are available in either 8-pin MSOP or standard 8-pin SO packages.
The TPS3305-xx family is characterized for operation over a temperature range of 40
°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
SMALL OUTLINE
(D)
PowerPAD
-SMALL OUTLINE
(DGN)
MARKING
DGN PACKAGE
CHIP FORM
(Y)
TPS3305-18D
TPS3305-18DGN
TIAAM
TPS3305-18Y
40
_C to 85_C
TPS3305-25D
TPS3305-25DGN
TIAAN
TPS3305-25Y
40 C to 85 C
TPS3305-33D
TPS3305-33DGN
TIAAO
TPS3305-33Y
PowerPAD is a trademark of Texas Instruments Incorporated.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS3306-15 | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS3306-15D | 功能描述:监控电路 Dual-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 |
| TPS3306-15D | 制造商:Texas Instruments 功能描述:IC's |
| TPS3306-15DG4 | 功能描述:监控电路 Dual-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 |
| TPS3306-15DGK | 功能描述:监控电路 Dual-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 |
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