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TPS3823

現行

具有 1.6-s 監控系統和手動重設功能的低電位作動、推挽式電壓監控器 (重設 IC)

產品詳細資料

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.63, 2.64, 2.93, 4.55 Features Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Reset threshold accuracy (%) 2, 2.2, 2.3, 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Watchdog timer WDI (s) 1.6 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.63, 2.64, 2.93, 4.55 Features Manual reset capable, Reset time delay, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer Reset threshold accuracy (%) 2, 2.2, 2.3, 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Watchdog timer WDI (s) 1.6 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Power-on reset generator with a fixed delay time of 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (TPS3820)
  • Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
  • Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
  • Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15µA (typical)
  • 5-pin SOT-23 package
  • Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)
  • Power-on reset generator with a fixed delay time of 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (TPS3820)
  • Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
  • Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
  • Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
  • Supply current of 15µA (typical)
  • 5-pin SOT-23 package
  • Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)

The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to make sure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage (VIT− + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200ms (TPS3820) and 1.6s (TPS3823, TPS3824, and TPS3828).

The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to make sure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage (VIT− + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200ms (TPS3820) and 1.6s (TPS3823, TPS3824, and TPS3828).

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技術文件

star =TI 所選的此產品重要文件
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檢視所有 9
類型 標題 日期
* Data sheet TPS382x Voltage Monitor With Watchdog Timer datasheet (Rev. O) PDF | HTML 2025年 3月 20日
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Application brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 2019年 4月 5日
Technical article Improve circuit breaker leakage current response with a voltage supervisor PDF | HTML 2019年 1月 10日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Disabling the Watchdog Timer for TI's Family of Supervisors 2003年 10月 30日
Application note Power Supply Sequencing Solutions for Dual Supply Voltage DSPs (Rev. A) 2000年 7月 5日

設計與開發

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開發板

TPS382-Q1EVM — 具有整合式看門狗的 TPS382x-Q1 電壓監控器評估模組

TPS382-Q1EVM 評估模組 (EVM) 有五種不同的 TPS382x-Q1 裝置,可讓您評估和測試產品系列的不同功能。  EVM 包括具有 2.5V、3V、3.3V 和 5V 固定監控功能的裝置,並配備看門狗輸入、手動重設、正和負重設輸出、以及開漏和推拉式重設功能的。
使用指南: PDF
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參考設計

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此參考設計為高電壓鋰離子 (Li-ion)、磷酸鐵鋰 (LiFePO4) 電池架的中央控制器。此設計提供適用於高電壓繼電器的驅動電路、通訊介面 (包括 RS-485、控制器區域網路 (CAN)、菊鍊與乙太網路)、濕度感測器的可擴充介面、高電壓類比轉數位轉換器 (ADC),以及電流感測器。

此設計使用高性能微控制器進行開發和測試應用。這些功能讓此參考設計適用於高容量電池架應用的中央控制器。

Design guide: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 5 Ultra Librarian

訂購與品質

內含資訊:
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  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
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