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参数资料
| 型号： | TPS3306-20QDRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封装： | ROHS COMPLIANT, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 7/14页 |
| 文件大小： | 272K |
| 代理商： | TPS3306-20QDRQ1 |
TPS330615Q1, TPS330618Q1, TPS330620Q1, TPS330625Q1, TPS330633Q1
DUAL PROCESSOR SUPERVISORY CIRCUITS WITH POWER FAIL
SGLS241B MARCH 2004 REVISED APRIL 2008
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The various supervisory circuits 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
TPS3306-15
3.3 V
1.5 V
2.93 V
1.4 V
TPS3306-18
3.3 V
1.8 V
2.93 V
1.68 V
TPS3306-20
3.3 V
2 V
2.93 V
1.85 V
TPS3306-25
3.3 V
2.5 V
2.93 V
2.25 V
TPS3306-33
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
supervisory circuits monitor the SENSEn inputs and keep 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) = 100 ms, starts after SENSE1 and SENSE2 inputs have risen above VIT. When the
voltage at SENSE1 or SENSE2 input drops below the VIT, the output becomes active (low) again.
The integrated power-fail (PFI) comparator with separate open-drain (PFO) output can be used for low-battery
detection, power-fail warning, or for monitoring a power supply other than the main supply.
The TPS3306-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative
transition of the watch-dog timer (WDI). When the supervising system fails to retrigger the watchdog circuit
within the time-out interval, tt(out) = 0.50 s, RESET becomes active for the time period td . This event also
reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog.
The TPS3306-xx devices are available in standard 8-pin SO packages.
The TPS3306-xxQ family is characterized for operation over a temperature range of 40
°C to 125°C.
AVAILABLE OPTIONS{
TA
PACKAGED DEVICES}
TOP-SIDE
TA
SMALL OUTLINE (D)
TOP-SIDE
MARKING
Tape and reel
TPS3306-15QDRQ1
615Q1
Tape and reel
TPS3306-18QDRQ1
618Q1
40
_C to 125_C
Tape and reel
TPS3306-20QDRQ1
620Q1
40 C to 125 C
Tape and reel
TPS3306-25QDRQ1
625Q1
Tape and reel
TPS3306-33QDRQ1
633Q1
For the most current package and ordering information, see the Package Option Addendum
at the end of this document, or see the TI web site at http://www.ti.com.
Package
drawings,
thermal
data,
and
symbolization
are
available
at
http://www.ti.com/packaging.
相关PDF资料 |
PDF描述 |
|---|---|
| TPS3306-33QDRG4Q1 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TPS3306-15QDRG4Q1 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TPS3306-25DGKG4 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TPS3306-20DG4 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| TPS3306-20DGKR | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS3306-25 | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL |
| TPS330625D | 制造商:Texas Instruments 功能描述: |
| TPS3306-25D | 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 |
| TPS3306-25DG4 | 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 |
| TPS3306-25DGK | 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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