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TPS3619-33 - BACKUP-BATTERY SUPERVISORS

General Description

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.

Key Features

  • 1.
  • 2 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TPS3619-33, TPS3619-50 TPS3620-33, TPS3620-50 www.ti.com SLVS387H – APRIL 2001 – REVISED DECEMBER 2007 BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION FEATURES 1 •2 Supply Current of 40 µA (Max) • Battery-Supply Current of 100 nA (Max) • Precision Supply Voltage Monitor 3.