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TPS3852

現行

具有可編程窗型監視計時器的高準確度電壓監控器

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產品規格表

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
TPS36-Q1 現行 具有視窗監視計時器的車用毫微靜態電流精密監控器 250-nA IQ, enhanced watchdog accuracy, compact packaging, and on-the-fly programming

TPS3852

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 3.069, 3.168 Features Manual reset capable, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer, Window watchdog Reset threshold accuracy (%) 0.8 Iq (typ) (mA) 0.01 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 Watchdog timer WDI (s) Programmable Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 3.069, 3.168 Features Manual reset capable, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer, Window watchdog Reset threshold accuracy (%) 0.8 Iq (typ) (mA) 0.01 Output driver type/reset output Active-low, Open-drain Time delay (ms) 200 Watchdog timer WDI (s) Programmable Operating temperature range (°C) -40 to 125
VSON (DRB) 8 9 mm² (3 mm × 3 mm)
  • VDD Input Voltage Range: 1.6 V to 6.5 V
  • 0.8% Voltage Threshold Accuracy
  • Low Supply Current: IDD = 10 µA (typical)
  • User-Programmable Watchdog Timeout
  • Factory Programmed Precision Watchdog and Reset Timers:
    • ±15% Accurate WDT and RST Delays
  • Open-Drain Outputs
  • Manual Reset Input (MR)
  • Precision Undervoltage Monitoring
    • Supports Common Rails from 1.8 V to 5 V
    • 4% and 7% Thresholds Available
    • 0.5% Hysteresis
  • Watchdog Disable Feature
  • Available in a Small 3-mm × 3-mm, 8-Pin VSON Package
  • VDD Input Voltage Range: 1.6 V to 6.5 V
  • 0.8% Voltage Threshold Accuracy
  • Low Supply Current: IDD = 10 µA (typical)
  • User-Programmable Watchdog Timeout
  • Factory Programmed Precision Watchdog and Reset Timers:
    • ±15% Accurate WDT and RST Delays
  • Open-Drain Outputs
  • Manual Reset Input (MR)
  • Precision Undervoltage Monitoring
    • Supports Common Rails from 1.8 V to 5 V
    • 4% and 7% Thresholds Available
    • 0.5% Hysteresis
  • Watchdog Disable Feature
  • Available in a Small 3-mm × 3-mm, 8-Pin VSON Package

The TPS3852 is a precision voltage supervisor with an integrated window watchdog timer. The TPS3852 includes a precision undervoltage supervisor with an undervoltage threshold (VITN) that achieves 0.8% accuracy over the specified temperature range of –40°C to +125°C. In addition, the TPS3852 includes accurate hysteresis making the device ideal for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timer.

The TPS3852 includes a programmable window watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled to avoid undesired watchdog timeouts during the development process.

The TPS3852 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package.

The TPS3852 is a precision voltage supervisor with an integrated window watchdog timer. The TPS3852 includes a precision undervoltage supervisor with an undervoltage threshold (VITN) that achieves 0.8% accuracy over the specified temperature range of –40°C to +125°C. In addition, the TPS3852 includes accurate hysteresis making the device ideal for use with tight tolerance systems. The supervisor RESET delay features a 15% accuracy, high-precision delay timer.

The TPS3852 includes a programmable window watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled to avoid undesired watchdog timeouts during the development process.

The TPS3852 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package.
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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS3852 Precision Voltage Supervisor with Programmable Window Watchdog Timer datasheet PDF | HTML 2016/11/21
應用說明 Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020/3/17
電子書 Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019/6/28
技術文章 Exploring watchdog timer applications PDF | HTML 2017/2/2

設計與開發

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模擬型號

TPS3852 PSpice Transient Model

SBVM660.ZIP (70 KB) - PSpice 模型
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模擬型號

TPS3852 Unencrypted PSpice Transient Model

SBVM659.ZIP (7 KB) - PSpice 模型
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參考設計

TIDA-010049 — 適用於 IEC 61508 的 TUV 評估數位輸入參考設計 (SIL-2)

此 8 通道群組隔離式數位輸入模組參考設計，專為具備工業功能安全需求的應用而設計。此設計內建診斷功能，可協助偵測永久性與瞬態隨機硬體故障。此輸入模組的設計概念已通過 TUEV SUED (TÜV SÜD) 評估，可協助設計人員符合 IEC61508-2:2010 (SIL2) 和 EN13849-1:2015 (Cat2 PLd) 的系統合規性要求。此外，此設計具有 0（1oo1D 架構）的硬體容錯 (HFT) ，以及符合 IEC61131-2（類型 1）建議的數位輸入。
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