TPS3306
- Dual Supervisory Circuits With Power-Fail for DSP and Processor-Based Systems
- Voltage Monitor for Power-Fail or Low-Battery Warning
- Watchdog Timer With 0.8 Second Time-Out
- Power-On Reset Generator With Integrated 100 ms Delay Time
- Open-Drain Reset and Power-Fail Output
- Supply Current of 15 µA (Typ.)
- Supply Voltage Range: 7 V to 6 V
- Defined RESET Output From VDD ≥ 1.1 V
- MSOP-8 and SO-8 Packages
- Temperature Range: -40°C to +85°C
- APPLICATIONS
- Multivoltage DSPs and Processors
- Portable Battery-Powered Equipment
- Embedded Control Systems
- Intelligent Instruments
- Automotive Systems
All trademarks are the property of their respective owners.
The TPS3306 family is a series of supervisory circuits designed for circuit initialization which require two supply voltages, primarily in DSP and processor-based systems.
The product spectrum of the TPS3306-xx is designed for monitoring two independent supply voltages of 3.3 V/1.5 V, 3.3 V/1.8 V, 3.3 V/2 V, 3.3 V/2.5 V, or 3.3 V/5 V.
The various supervisory circuits are designed to monitor the nominal supply voltage.
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 the threshold voltage VIT. When the voltage at SENSE1 or SENSE2 input drops below the threshold voltage 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 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 either 8-pin MSOP or standard 8-pin SO packages, and are characterized for operation over a temperature range of -40°C to +85°C.
您可能感兴趣的相似产品
功能与比较器件相似。
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Dual-Processor Supervisory Circuits with Power-Fail 数据表 (Rev. C) | 2006-12-1 | |||
| 选择指南 | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020-2-28 | ||||
| 电子书 | 电压监测仪和电压检测器：提示、技巧和基础知识 | 英语版 | 2019-8-28 | |||
| 选择指南 | 电源管理指南 2018 | 2018-7-31 | ||||
| 应用手册 | Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs | 2011-9-19 | ||||
| 应用手册 | Monitoring Five Different Voltage Rails Using the TPS3103 and TPS3306 | 2003-8-28 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |