TPS3306-33-Q1 - 汽车类具有断电指示的双路处理器监控电路

TPS3306-33-Q1是TI德州仪器公司的一款无产品，TPS3306-33-Q1是汽车类具有断电指示的双路处理器监控电路，本站介绍了TPS3306-33-Q1的封装应用图解、特点和优点、功能等，并给出了与TPS3306-33-Q1相关的TI元器件型号供参考。

TPS3306-33-Q1 - 汽车类具有断电指示的双路处理器监控电路 - 无 - 监控器和复位IC - 德州仪器

产品描述

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, as shown in the following supply-voltage monitoring table.

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 standard 8-pin SO packages.

The TPS3306-xxQ family is characterized for operation over a temperature range of –40°C to 125°C.

产品特性

Qualified for Automotive Applications
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-s 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 . . . 2.7 V to 6 V
Defined RESET Output From VDD ≥ 1.1 V
SO-8 Package
Temperature Range . . . –40°C to 125°C
Applications Include
- Multivoltage DSPs and Processors
- Portable Battery-Powered Equipment
- Embedded Control Systems
- Intelligent Instruments
- Automotive Systems

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