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TPS3840-Q1

現行

具有手動重設和可編程重設延遲功能的車用高輸入電壓監控器

立即訂購
產品規格表

TPS3840-Q1

現行
產品規格表 立即訂購

產品詳細資料

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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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 TPS3840-Q1 Automotive Nano IQ Voltage Supervisor With MR and Programmable Delay datasheet (Rev. B) PDF | HTML 2020/4/30
功能安全資訊 TPS3840-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) 2023/11/14
Application brief Using Voltage Supervisors in High Voltage Applications (Rev. B) PDF | HTML 2023/2/20
功能安全資訊 簡化汽車及工業領域的功 能安全認證 Download English Version 2020/6/9
電子書 Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019/6/28
應用說明 Implementing Voltage References and Supervisors Into Your Traction Inverter Desi 2019/5/22
應用說明 Achieving Low IQ Voltage Supervision in Automotive, Wide-Vin Applications 2019/1/24

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開發板

TPS3840EVM — TPS3840 奈米功率高輸入電壓監控器評估模組

TPS3840 評估模組 (EVM) 是用於評估 TPS3840 裝置的平台，該產品為具備手動重設和可編程重設延遲功能的奈米功率電壓監控器。TPS3840 提供高達 10V 的工作電壓，除了精確度達 1%（一般）外，同時維持 350nA（一般）的超低靜態電流。TPS3840EVM 一共支援三種裝置輸出拓撲。如需詳細資訊，請參閱 TPS3840 產品規格表。

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參考設計

PMP22334 — 高效、低雜訊 5-V/3.3-V/1.8-V/1.1-V 車用顯示器參考設計

此參考設計適用於具有自訂外型尺寸的車用顯示器應用。此設計展示了 LM61460-Q1 搭配其 HotRod™ QFN 封裝的優異熱性能，以及在其展頻功能輔助下的低 EMI。它可以產生四個電壓分別為 5-V/3.3-V/1.1-V/1.8-V 的軌。專為需要熱性能與 EMI 性能的高效率及低雜訊應用而設計。
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