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TPS3808-EP

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低静态电流可编程延迟监控电路（增强型产品）

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TPS3808-EP

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产品详情

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 3.07 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) 1.25, 20, 300, 1200 Supply voltage (min) (V) 1.7, 1.8 Supply voltage (max) (V) 6.5 Rating HiRel Enhanced Product Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 3.07 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) 1.25, 20, 300, 1200 Supply voltage (min) (V) 1.7, 1.8 Supply voltage (max) (V) 6.5 Rating HiRel Enhanced Product Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of
    –55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources
    (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree1
  • Power-On Reset Generator With Adjustable
    Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage
    Rails From 0.9 V to 5 V and Adjustable Voltage
    Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –55°C to 125°C
  • Small SOT-23 Package
  • Controlled Baseline
    • One Assembly Site
    • One Test Site
    • One Fabrication Site
  • Extended Temperature Performance of
    –55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources
    (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree1
  • Power-On Reset Generator With Adjustable
    Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage
    Rails From 0.9 V to 5 V and Adjustable Voltage
    Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –55°C to 125°C
  • Small SOT-23 Package

The TPS3808xxx family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5.0 V, 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 TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in a small SOT-23 package, and is fully specified over a temperature range of –55°C to +125°C (TJ).

The TPS3808xxx family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5.0 V, 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 TPS3808 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25 ms and 10 s by connecting the CT pin to an external capacitor. The TPS3808 has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in a small SOT-23 package, and is fully specified over a temperature range of –55°C to +125°C (TJ).
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类型 标题 下载最新的英语版本 日期
* 数据表 TPS3808-EP Low Quiescent Current, Programmable Delay Supervisory Circuit 数据表 (Rev. D) PDF | HTML 2014年 12月 24日
* 辐射与可靠性报告 TPS3808-EP Reliability Report (Rev. A) 2018年 6月 18日
* VID TPS3808-EP VID V6208607 2016年 6月 21日
应用手册 设计电压监控器的电阻分压器输入端时的 IQ与精度权衡因素 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2021年 10月 25日
应用手册 Adding Hysteresis to Supply Voltage Supervisor 2009年 8月 19日

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