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TPS3820-Q1

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具有 0.2 s 看门狗和手动复位功能的低电平有效、推挽式汽车电压监控器（复位 IC）

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TPS3820-Q1

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产品详情

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Manual reset capable, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 25 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) 0.2 Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Manual reset capable, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 25 Supply voltage (min) (V) 1.1 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) 0.2 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Qualified for automotive applications
  • AEC-Q100 Qualified With the Following Results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • ESD protection exceeds 2000V Per MIL-STD-883, Method 3015; using human body model (C = 100pF, R = 1500Ω)
  • Power-on reset generator with fixed delay time of 200ms (TPS3823/4/5/8-xx-Q1) or 25ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15µA (typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C
  • Qualified for automotive applications
  • AEC-Q100 Qualified With the Following Results:
    • Device temperature grade 1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • ESD protection exceeds 2000V Per MIL-STD-883, Method 3015; using human body model (C = 100pF, R = 1500Ω)
  • Power-on reset generator with fixed delay time of 200ms (TPS3823/4/5/8-xx-Q1) or 25ms (TPS3820-xx-Q1)
  • Manual reset input (TPS3820/3/5/8-xx-Q1)
  • Reset output available in active-low (TPS3820/3/4/5-xx-Q1), Active-High (TPS3824/5-xx-Q1), and open drain (TPS3828-xx-Q1)
  • Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
  • Watchdog timer (TPS3820/3/4/8-xx-Q1)
  • Supply current of 15µA (typical)
  • 5-Pin SOT-23 package
  • Temperature range: −40°C to 125°C

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 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 below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to verify a proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. 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-xx-Q1 family also offers watchdog time out options of 200ms (TPS3820-xx-Q1) and 1.6s (TPS3823/4/8-xx-Q1).

For all new designs with TPS3820-xx-Q1, use the TPS3820-xxQPDBVRQ1 part number. The TPS3820-xxQP is functionally equivalent and a replacement to the TPS3820xxQ. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 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 below the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to verify a proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage VIT−. 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-xx-Q1 family also offers watchdog time out options of 200ms (TPS3820-xx-Q1) and 1.6s (TPS3823/4/8-xx-Q1).
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特别说明

对于所有新设计，请使用立即订购选项卡中的 TPS3820-33QPDBVRQ1 和 TPS3820-50QPDBVRQ1。TPS3820-xxQP 与 TPS3820xxQ 在功能上等效，是其替代产品。

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS382x-xx-Q1 Voltage Monitor With Watchdog Timer 数据表 (Rev. E) PDF | HTML 2025年 3月 19日
应用手册 Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
功能安全信息 TPS382x-Q1 Functional Safety FIT Rate and Failure Mode Distribution 2019年 12月 19日
应用简报 Latching a Voltage Supervisor (Reset IC) (Rev. A) 2019年 4月 5日
应用手册 Disabling the Watchdog Timer for TI's Family of Supervisors 2003年 10月 30日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

TPS382-Q1EVM — 具有集成看门狗的 TPS382x-Q1 电压监控器评估模块

TPS382x-Q1 EVM 有 5 种不同的 TPS382x-Q1 器件，可以在整个产品系列实现不同功能的评估和测试。该 EVM 包括 2.5V、3.0V、3.3V 和 5V 固定监控、看门狗输入、手动复位、正负复位输出，以及开漏和推挽复位器件。
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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