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TPS3890-Q1

現行

具有可編程延遲的汽車低靜態電流 1% 準確度監控器

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產品規格表

TPS3890-Q1

現行
產品規格表 立即訂購

產品詳細資料

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.15, 1.44, 1.73, 2.4, 2.89, 2.93, 3.066, 3.17, 4.4, 4.65, 4.8, Adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0021 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0.008, 0.018, 0.025 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.15, 1.44, 1.73, 2.4, 2.89, 2.93, 3.066, 3.17, 4.4, 4.65, 4.8, Adjustable Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0021 Output driver type/reset output Active-low, Open-drain Time delay (ms) 0.008, 0.018, 0.025 Supply voltage (min) (V) 1.5 Supply voltage (max) (V) 5.5 TI functional safety category Functional Safety-Capable Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
WSON (DSE) 6 2.25 mm² 1.5 x 1.5
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
  • Very Low Supply Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 5 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
  • Very Low Supply Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 5 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON

The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).

The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 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 TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).
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類型 標題 日期
* Data sheet TPS3890-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B) PDF | HTML 2018年 2月 28日
Functional safety information TPS3890-Q1 Functional Safety FIT Rate and Failure Mode Distribution 2019年 12月 18日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Technical article How voltage references and supervisors help achieve ASIL functional safety goals PDF | HTML 2019年 5月 10日

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開發板

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使用指南: PDF
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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參考設計

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電路圖: PDF
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