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Supervisor & reset ICs

TPS3619-33-EP

LAST TIME BUY

Enhanced Product Backup-Battery Supervisors For Ram Retention

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Data sheet
TPS3619-33-EP is in the process of being discontinued
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TPS3619 ACTIVE Battery-backup supervisor for RAM retention Replacement

TPS3619-33-EP

LAST TIME BUY
Data sheet Order now

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Battery backup switchover, Manual reset capable, PFI/PFO, Reset time delay Reset threshold accuracy (%) 1.7 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 HiRel Enhanced Product Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93, 4.55 Features Battery backup switchover, Manual reset capable, PFI/PFO, Reset time delay Reset threshold accuracy (%) 1.7 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 HiRel Enhanced Product Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
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, and 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-to-Pin Compatible With MAX819, MAX703, and MAX704
  • 8-Pin Mini Small-Outline Package (MSOP) Package
  • SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C/125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
  • 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

(1) Additional temperature ranges available - contact factory
  • Supply Current of 40 µA (Max)
  • Battery-Supply Current of 100 nA (Max)
  • Precision Supply-Voltage Monitor 3.3 V, 5 V, and 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-to-Pin Compatible With MAX819, MAX703, and MAX704
  • 8-Pin Mini Small-Outline Package (MSOP) Package
  • SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (–55°C/125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
  • 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

(1) Additional temperature ranges available - contact factory

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 –55°C to 125°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 –55°C to 125°C.
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Type Title Date
* Data sheet TPS3619-33-EP, TPS3619-50-EP, TPS3620-33-EP, TPS3620-50-EP datasheet (Rev. C) 24 Sep 2010
* VID TPS3619-33-EP VID V6206670 21 Jun 2016
* VID TPS3619-33-EP VID V6206670 21 Jun 2016
Application note Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 30 Apr 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

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