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TPS3619

現行

適用於 RAM 保持的電池備份監控器

立即訂購
產品規格表

TPS3619

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) 2.93, 4.55 Features Battery backup switchover, Manual reset capable, PFI/PFO, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.04 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 100 Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Battery backup switchover, Manual reset capable, PFI/PFO, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 2.4 Iq (typ) (mA) 0.04 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 100 Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Supply Current of 40 µA (Max)
  • Battery-Supply Current of 100 nA (Max)
  • Precision Supply Voltage Monitor 3.3 V, 5 V, Other Options on Request
  • Backup-Battery Voltage Can Exceed VDD
  • Power On Reset Generator With Fixed 100-ms Reset Delay Time
  • Voltage Monitor For Power-Fail or Low-Battery Monitoring
  • Battery Freshness Seal (TPS3619)
  • Pin-For-Pin Compatible With MAX819, MAX703, and MAX704
  • 8-Pin MSOP Package
  • Temperature Range –40°C to +85°C
  • APPLICATIONS
    • Fax Machines
    • Set-Top Boxes
    • Advanced Voice Mail Systems
    • Portable Battery-Powered Equipment
    • Computer Equipment
    • Advanced Modems
    • Automotive Systems
    • Portable Long-Time Monitoring Equipment
    • Point-of-Sale Equipment

All other trademarks are the property of their respective owners
  • Supply Current of 40 µA (Max)
  • Battery-Supply Current of 100 nA (Max)
  • Precision Supply Voltage Monitor 3.3 V, 5 V, Other Options on Request
  • Backup-Battery Voltage Can Exceed VDD
  • Power On Reset Generator With Fixed 100-ms Reset Delay Time
  • Voltage Monitor For Power-Fail or Low-Battery Monitoring
  • Battery Freshness Seal (TPS3619)
  • Pin-For-Pin Compatible With MAX819, MAX703, and MAX704
  • 8-Pin MSOP Package
  • Temperature Range –40°C to +85°C
  • APPLICATIONS
    • Fax Machines
    • Set-Top Boxes
    • Advanced Voice Mail Systems
    • Portable Battery-Powered Equipment
    • Computer Equipment
    • Advanced Modems
    • Automotive Systems
    • Portable Long-Time Monitoring Equipment
    • Point-of-Sale Equipment

All other trademarks are the property of their respective owners

The TPS3619 and TPS3620 families of supervisory circuits monitor and control processor activity by providing backup-battery switchover for data retention of CMOS RAM.

During power on, RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET output active 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 ensure proper system reset. The delay time starts after VDD has risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again.

The product spectrum is designed for supply voltages of 3.3 V and 5 V. The TPS3619 and TPS3620 are available in an 8-pin MSOP package and are characterized for operation over a temperature range of
–40°C to +85°C.

The TPS3619 and TPS3620 families of supervisory circuits monitor and control processor activity by providing backup-battery switchover for data retention of CMOS RAM.

During power on, RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET output active 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 ensure proper system reset. The delay time starts after VDD has risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again.

The product spectrum is designed for supply voltages of 3.3 V and 5 V. The TPS3619 and TPS3620 are available in an 8-pin MSOP package and are characterized for operation over a temperature range of
–40°C to +85°C.
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技術文件

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類型 標題 日期
* Data sheet Backup-Battery Supervisors for RAM Retention datasheet (Rev. H) 2007年 12月 4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 note Using the TPS3619 With MSP430 Microcontrollers (Rev. B) PDF | HTML 2018年 8月 6日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article Charge pumps: An often unconsidered method of DC/DC conversion PDF | HTML 2015年 7月 17日

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