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TLV840

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具有可調節復位延時時間和手動復位的低壓監控器

產品詳情

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 0.9, 1, 1, 1.1, 1.3, 1.4, 2, 2, 2.8, 2.9, 3, 3, 3.3, 3.5, 4, 4.3, 4.6, 5, 5, 5.2 Features Detection time delay, Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Supply voltage (min) (V) 0.7 Supply voltage (max) (V) 6 Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 0.9, 1, 1, 1.1, 1.3, 1.4, 2, 2, 2.8, 2.9, 3, 3, 3.3, 3.5, 4, 4.3, 4.6, 5, 5, 5.2 Features Detection time delay, Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Supply voltage (min) (V) 0.7 Supply voltage (max) (V) 6 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm2 2.9 x 2.8
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 μs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 μs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.
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類型 標題 下載最新的英語版本 日期
* 數據表 TLV840 低壓監控器，帶可調復位時間延遲和手動復位 數據表 (Rev. C) 2020年 8月 13日
技術文章 Three reasons to add a voltage supervisor to your next wearable power design PDF | HTML 2021年 6月 17日
應用手冊 Back-up Power Supply Switchover with Supply Voltage Supervisor & Power & Power M 2020年 4月 9日
應用手冊 Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions 2020年 3月 10日
選擇指南 Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
EVM 用戶指南 TLV840EVM Voltage Supervisor User's Guide 2020年 2月 13日

設計和開發

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評估板

TLV840EVM — TLV840 具有可調節復位延時時間的低壓監控器評估模塊

TLV840 評估模塊 (EVM) 旨在評估 TLV840 產品的性能，該產品是 5 引腳電壓監控器和復位 IC。TLV840 可提供高達 6V 的運行，同時維護 1.2μA（最大值）的低靜態電流與 2%（最大值）的精度。

TLV840EVM?支持所有器件輸出拓撲，并包括可置于跳線 J1 上的分流器，適用于開漏輸出型號。要了解詳細信息，請參閱 TLV840 數據表。

用戶指南: PDF
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仿真模型

TLV840 PSpice Model

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