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TPS3619

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適用于 RAM 保持模式的電池備份監(jiān)控器

產(chǎn)品詳情

Rating Catalog 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 Watchdog timer WDI (s) None Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 85
Rating Catalog 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 Watchdog timer WDI (s) None Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 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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頂層文檔 類型 標(biāo)題 格式選項(xiàng) 下載最新的英語版本 日期
* 數(shù)據(jù)表 Backup-Battery Supervisors for RAM Retention 數(shù)據(jù)表 (Rev. H) 2007年 12月 4日
應(yīng)用手冊 Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
選擇指南 Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
電子書 電壓監(jiān)測儀和電壓檢測器：提示、技巧和基礎(chǔ)知識(shí) 英語版 2019年 8月 28日
應(yīng)用手冊 Using the TPS3619 With MSP430 Microcontrollers (Rev. B) PDF | HTML 2018年 8月 6日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
技術(shù)文章 Charge pumps: An often unconsidered method of DC/DC conversion PDF | HTML 2015年 7月 17日

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