TPS3808

現行

具有可編程延遲和手動復位功能的低靜態電流監控器

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最新 TPS3808E 現行 ‌具有可編程延遲和手動重設功能的 600nA 超低靜態電流監控器 TPS3808E offers superior accuracy to help optimize system reset timing, and a 4-fold reduction in quiescent current.

產品詳細資料

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 0.84, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.07, 4.65 Features Manual reset capable Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 1.8 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.405, 0.84, 1.16, 1.4, 1.67, 1.77, 2.33, 2.79, 3.07, 4.65 Features Manual reset capable Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.0024 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 1.8 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8 WSON (DRV) 6 4 mm² 2 x 2
  • 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: –40°C to 125°C
  • Small SOT-23 and 2-mm × 2-mm WSON packages
  • 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: –40°C to 125°C
  • Small SOT-23 and 2-mm × 2-mm WSON packages

The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 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 device 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 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and is fully specified over a temperature range of –40°C to 125°C (TJ).

The TPS3808 family of microprocessor supervisory circuits monitors system voltages from 0.4 V to 5 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 device 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 device has a very low typical quiescent current of 2.4 µA, so it is well-suited to battery-powered applications. It is available in the SOT-23 and 2-mm × 2-mm WSON packages, and 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 TPS3808 Low-Quiescent-Current, Programmable-Delay Supervisory Circuit datasheet (Rev. M) PDF | HTML 2023年 3月 4日
Application note Voltage and Processor Monitoring Solutions in Factory Automation and Control App (Rev. A) 2021年 8月 5日
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Application brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 2019年 4月 5日
Application note Comparing Voltage and Processor Monitoring Solutions 2019年 4月 5日
Application brief Mitigating the Voltage Glitch on the Output of a Voltage Supervisor (Reset IC) D 2018年 6月 27日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Design guide Using the TMS320C6657 to Implement Efficient OPUS Codec Solution Design Guide 2015年 6月 16日
Application note Setting the SVS Voltage Monitor Threshold 2012年 5月 23日
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011年 9月 19日
Application note Sensitivity Analysis for Power Supply Design 2011年 9月 6日
Application note Power Two Xilinx(TM) LX240 Virtex-6(TM) Devices 2010年 4月 20日
White paper Spartan 6 LX150T Modular Solution 2009年 10月 14日
User guide Virtex 6 LX130T Module design 2009年 8月 27日

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TPS3808 具有可編程延遲和手動復位功能的低靜態電流監控器
支援軟體

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 6 Ultra Librarian
WSON (DRV) 6 Ultra Librarian

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