TPS3847085DBVR TI Supervisory Circuit | SOT-23-5 | 2.63V Threshold, Active-Low Reset

Product Overview

The TPS3847085DBVR from Texas Instruments is a voltage supervisory circuit designed for monitoring power supply voltages in digital systems. It provides a precision voltage reference and a comparator that monitors the VDD input for undervoltage conditions. When VDD falls below the threshold voltage (2.63V typical), the RESET output (active-low) asserts and remains asserted until VDD rises above the threshold plus hysteresis. The device features a fixed-sense threshold and an open-drain RESET output, making it ideal for use in a wide range of applications requiring reliable system reset during power-up, power-down, and brownout conditions. Housed in a compact SOT-23-5 package, it is suitable for space-constrained designs.

Detailed Technical Specifications

Key Features

• Precision voltage monitoring with 2.63V threshold
• Low quiescent current of 1.5µA
• Open-drain RESET output with internal pull-up resistor option
• 200ms reset timeout delay
• Wide supply voltage range: 1.6V to 6.0V
• Temperature range: -40°C to +125°C
• Small SOT-23-5 package

Target Applications

• 5G base station power management
• Automotive dashboard systems
• Industrial control systems
• Portable battery-powered devices
• FPGA and DSP power monitoring

Global Supply Chain & Wholesale Solutions

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產品概述

TPS3847085DBVR 是德州儀器（TI）推出的一款電壓監控電路，用於監測數字系統中的電源電壓。它提供精確的電壓基準和比較器，監控 VDD 輸入是否欠壓。當 VDD 低於閾值電壓（典型值 2.63V）時，RESET 輸出（低電平有效）會置位，並保持到 VDD 回升至閾值加上滯回電壓以上。該器件具有固定檢測閾值和開漏 RESET 輸出，非常適合在需要可靠系統復位的上電、斷電和電壓驟降條件下使用。採用緊湊的 SOT-23-5 封裝，適用於空間受限的設計。

詳細技術參數

核心特性

• 精確電壓監控，閾值 2.63V
• 低靜態電流 1.5µA
• 開漏 RESET 輸出，可選內部上拉電阻
• 200ms 復位超時延遲
• 寬電源電壓範圍：1.6V 至 6.0V
• 溫度範圍：-40°C 至 +125°C
• 小型 SOT-23-5 封裝

典型應用場景

• 5G 基站電源管理
• 汽車儀表板系統
• 工業控制系統
• 便攜式電池供電設備
• FPGA 和 DSP 電源監控

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