TPS3818G25 - 低静态电流、精确可编程延迟监控电路

TPS3818G25是TI德州仪器公司的一款无产品，TPS3818G25是低静态电流、精确可编程延迟监控电路，本站介绍了TPS3818G25的封装应用图解、特点和优点、功能等，并给出了与TPS3818G25相关的TI元器件型号供参考。

TPS3818G25 - 低静态电流、精确可编程延迟监控电路 - 无 - 监控器和复位IC - 德州仪器

产品描述

The TPS3818xxx family of microprocessor supervisory circuitsmonitor system voltages from 0.4V to 5.0V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.

The TPS3818 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3V. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 10s by connecting the CT pin to an external capacitor. When used with an external capacitor, the TPS3818xxx gives a more accurate delay time than the similar TPS3808xxx device. The TPS3818 has a very low typical quiescent current of 2.4µA so it is well-suited to battery-powered applications. It is available in either a small SOT23 and an ultra-small 2mm × 2mm QFN PowerPAD package, and is fully specified over a temperature range of -40°C to +125°C (TJ).

产品特性

Power-On Reset Generator withAdjustable Delay Time: 1.25ms to 10s
Very Low Quiescent Current: 2.4µA typ
High Threshold Accuracy: 0.5% typ
Fixed Threshold Voltages for Standard Voltage Rails from 0.9V to 5V and Adjustable Voltage Down to 0.4V Are Available
Manual Reset (MR) Input
Open-Drain RESET Output
Temperature Range: -40°C to +125°C
Small SOT23 and 2mm × 2mm QFN Packages
APPLICATIONS
- DSP or Microcontroller Applications
- Notebook/Desktop Computers
- PDAs/Hand-Held Products
- Portable/Battery-Powered Products
- FPGA/ASIC Applications

PowerPAD Is a trademark of Texas Instruments All other trademarks are the property of their respective owners

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