主頁 電源管理 監控器和復位 IC 復位及看門狗 IC

TPS3818G25

正在供貨

低靜態電流、高精度可編程延遲監控器

產品詳情

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.33 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Time delay (ms) 20, 300 Watchdog timer WDI (s) None Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.33 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 0.5 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Time delay (ms) 20, 300 Watchdog timer WDI (s) None Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Operating temperature range (°C) -40 to 125
WSON (DRV) 6 4 mm2 2 x 2
  • 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
    • 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
  • 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
    • 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

The TPS3818xxx 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 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).

The TPS3818xxx 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 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).
下載 觀看帶字幕的視頻 視頻

您可能感興趣的相似產品

open-in-new 比較替代產品
功能與比較器件相似
TPS3899 正在供貨 具有可編程感應和復位延遲功能的納米功率監控器 Lower quiescent current (125nA) with programmable sense delay

技術文檔

star =有關此產品的 TI 精選熱門文檔
未找到結果。請清除搜索并重試。
查看全部 2
類型 標題 下載最新的英語版本 日期
* 數據表 Low Quiescent Current, Accurate Programmable-Delay Supervisory Circuit 數據表 (Rev. A) 2008年 8月 9日
應用手冊 設計電壓監控器的電阻分壓器輸入端時的 IQ與精度權衡因素 (Rev. B) PDF | HTML 英語版 (Rev.B) PDF | HTML 2021年 10月 25日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

模擬工具

PSPICE-FOR-TI — PSpice? for TI 設計和仿真工具

PSpice? for TI 可提供幫助評估模擬電路功能的設計和仿真環境。此功能齊全的設計和仿真套件使用 Cadence? 的模擬分析引擎。PSpice for TI 可免費使用，包括業內超大的模型庫之一，涵蓋我們的模擬和電源產品系列以及精選的模擬行為模型。

借助?PSpice for TI 的設計和仿真環境及其內置的模型庫，您可對復雜的混合信號設計進行仿真。創建完整的終端設備設計和原型解決方案，然后再進行布局和制造，可縮短產品上市時間并降低開發成本。?

在?PSpice for TI 設計和仿真工具中，您可以搜索 TI (...)
發送申請
封裝 引腳 CAD 符號、封裝和 3D 模型
WSON (DRV) 6 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

支持和培訓

視頻