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TPS3840-Q1

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具有手动复位和可编程复位延时时间的汽车类高输入电压监控器

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数据表

TPS3840-Q1

正在供货
数据表 立即订购

产品详情

Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.6, 1.8, 2, 2.5, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.7, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7 Features Manual reset capable, Radar Hardware Accelerator, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.05 Watchdog timer WDI (s) None TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.6, 1.8, 2, 2.5, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.7, 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7 Features Manual reset capable, Radar Hardware Accelerator, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-high, Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.05 Watchdog timer WDI (s) None TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Wide operating voltage : 1.5 V to 10 V
    • Use external resistors to extend Vin range
  • Nano supply current : 350 nA (Typ), 700 nA (Max)
  • Fixed threshold voltage (VIT-)
    • Threshold from 1.6 V to 4.9 V in 0.1-V steps
    • High accuracy: 1% (Typ), 1.5% (Max)
    • Built-in hysteresis (VIT+)
      • 1.6 V < VIT- ≤ 3.0 V = 100 mV (typical)
      • 3.1 V ≤ VIT- < 4.9 V = 200 mV (typical)
  • Fast start-up delay (tSTRT): 350 µs (Max)
  • Programmable capacitor-based reset time delay:
    • tD: 50 µs (no capacitor) to 6.2 s (10-µF)
  • Active-low manual reset (MR)
  • Three output topologies:
    • TPS3840DL-Q1: open-drain, active-low (RESET)
    • TPS3840PL-Q1: push-pull, active-low (RESET)
    • TPS3840PH-Q1: push-pull, active-high (RESET)
  • Package: 5-pin SOT-23 (DBV)
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C7B
  • Wide operating voltage : 1.5 V to 10 V
    • Use external resistors to extend Vin range
  • Nano supply current : 350 nA (Typ), 700 nA (Max)
  • Fixed threshold voltage (VIT-)
    • Threshold from 1.6 V to 4.9 V in 0.1-V steps
    • High accuracy: 1% (Typ), 1.5% (Max)
    • Built-in hysteresis (VIT+)
      • 1.6 V < VIT- ≤ 3.0 V = 100 mV (typical)
      • 3.1 V ≤ VIT- < 4.9 V = 200 mV (typical)
  • Fast start-up delay (tSTRT): 350 µs (Max)
  • Programmable capacitor-based reset time delay:
    • tD: 50 µs (no capacitor) to 6.2 s (10-µF)
  • Active-low manual reset (MR)
  • Three output topologies:
    • TPS3840DL-Q1: open-drain, active-low (RESET)
    • TPS3840PL-Q1: push-pull, active-low (RESET)
    • TPS3840PH-Q1: push-pull, active-high (RESET)
  • Package: 5-pin SOT-23 (DBV)

The TPS3840-Q1 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. TPS3840-Q1 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-) or when manual reset is pulled to a low logic (VMR_L). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VIT+) and manual reset (MR) is floating or above VMR_H and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between CT pin and ground. For a fast reset CT pin can be left floating.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for MR and VDD, built-in hysteresis, low open-drain output leakage current (ILKG(OD)). TPS3840-Q1 is a perfect voltage monitoring solution for automotive applications and battery-powered / low power applications.

The TPS3840-Q1 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. TPS3840-Q1 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-) or when manual reset is pulled to a low logic (VMR_L). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VIT+) and manual reset (MR) is floating or above VMR_H and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between CT pin and ground. For a fast reset CT pin can be left floating.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for MR and VDD, built-in hysteresis, low open-drain output leakage current (ILKG(OD)). TPS3840-Q1 is a perfect voltage monitoring solution for automotive applications and battery-powered / low power applications.

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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS3840-Q1 Automotive Nano IQ Voltage Supervisor With MR and Programmable Delay 数据表 (Rev. B) PDF | HTML 2020-4-30
应用简报 在高压应用中使用电压监控器 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2024-2-28
功能安全信息 TPS3840-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) 2023-11-14
功能安全信息 简化汽车和工业中的功能性安全认证 英语版 2020-6-9
电子书 电压监测仪和电压检测器：提示、技巧和基础知识 英语版 2019-8-28
应用手册 Implementing Voltage References and Supervisors Into Your Traction Inverter Desi 2019-5-22
应用手册 Achieving Low IQ Voltage Supervision in Automotive, Wide-Vin Applications 2019-1-24

设计与开发

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评估板

TPS3840EVM — TPS3840 毫微功耗高输入电压监控器评估模块

TPS3840 评估模块 (EVM) 是一款评估 TPS3840 器件的平台，该器件是一款毫微功耗电压监控器，具有手动复位和可编程复位延迟功能。TPS3840 的最高工作电压为 10V，并可维持 350nA（典型值）的低静态电流与 1%（典型值）的精度。TPS3840EVM 支持所有三种器件输出拓扑。要了解详细信息，请参阅 TPS3840 数据表。

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参考设计

PMP22334 — 高效、低噪声 5 V/3.3V/1.8V/1.1V 汽车显示屏参考设计

此参考设计适用于具有定制外形的汽车显示应用。此设计说明了 LM61460-Q1 出色的热性能。该器件采用 HotRod™ QFN 封装，通过扩展频谱技术降低了 EMI。该器件可产生 5V/3.3V/1.1V/1.8V 四个电压轨。它专为需要良好热性能和 EMI 特性的高效率、低噪声应用而设计。
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SOT-23 (DBV) 5 Ultra Librarian
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