TPS3808G12DBVR

产品概述

The TPS3808G12DBVR is a Supervisory Circuit with active-low open-drain output and manual reset input. The microprocessor supervisory circuit monitors system voltage from 0.4 to 5V, 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 device 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.

• power-ON reset generator
• Programmable time delay
• 2.4µA Typical very low quiescent current
• 0.5% Typical high threshold accuracy
• Green product and no Sb/Br

应用

传感与仪器, 消费电子产品, 自动化与过程控制