发布者： pzcdjj 发布时间：2024/3/11 13:19:59
德州仪器的低静态电流可编程延迟监控电路TPS3808G09dbvr
Low Quiescent Current, Programmable-Delay Supervisory Circuit
集成电路TPS3808G09dbvr的说明
The TPS3808xxx family of microprocessor supervisory circuits monitor 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 TPS3808 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. The TPS3808 has a very low typical quiescent current of 2.
集成电路TPS3808G09dbvr的特性
Power-On Reset Generator with Adjustable 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 -集成电路TPS3808G09dbvr的应用
DSP or Microcontroller Applications DSP或单片机应用
Notebook/Desktop Computers 笔记本和台式电脑
PDAs/Hand-Held Products pda /手持产品
Portable/Battery-Powered Products 便携式/电池驱动的产品
FPGA/ASIC Applications 现场可编程应用
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