TPS3620-33-EP Series

Enhanced Product Backup-Battery Supervisors For Ram Retention

Catalog

Enhanced Product Backup-Battery Supervisors For Ram Retention

Part	Reset Timeout	Package / Case	Package / Case [custom]	Package / Case	Type	Mounting Type	Voltage - Threshold	Operating Temperature [Max]	Operating Temperature [Min]	Output	Number of Voltages Monitored	Reset	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments TPS3620-33DGKR	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	2.93 V	85 °C	-40 °C	Push-Pull Totem Pole	1	Active Low
Texas Instruments TPS3620-33MDGKTEP	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	2.93 V			Push-Pull Totem Pole	1	Active Low	125 °C	-55 °C
Texas Instruments TPS3620-50DGKR	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	4.55 V	85 °C	-40 °C	Push-Pull Totem Pole	1	Active Low
Texas Instruments TPS3620-50DGKT	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	4.55 V	85 °C	-40 °C	Push-Pull Totem Pole	1	Active Low
Texas Instruments TPS3620-33DGKT	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	2.93 V	85 °C	-40 °C	Push-Pull Totem Pole	1	Active Low
Texas Instruments TPS3620-33MDGKREP	60 ms	8-MSOP 8-TSSOP	0.118 in	3 mm	Battery Backup Circuit	Surface Mount	2.93 V			Push-Pull Totem Pole	1	Active Low	125 °C	-55 °C

Catalog

Enhanced Product Backup-Battery Supervisors For Ram Retention

Key Features

• 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 RequestBackup-Battery Voltage Can Exceed VDDPower-On Reset Generator with Fixed 100-ms Reset Delay TimeVoltage Monitor for Power-Fail or Low-Battery MonitoringBattery Freshness Seal (TPS3619)Pin-to-Pin Compatible With MAX819, MAX703, and MAX7048-Pin Mini Small-Outline Package (MSOP) PackageSUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONSControlled BaselineOne Assembly/Test SiteOne Fabrication SiteAvailable in Military (–55°C/125°C) Temperature Range(1)Extended Product Life CycleExtended Product-Change NotificationProduct TraceabilityAPPLICATIONSFax MachinesSet-Top BoxesAdvanced Voice-Mail SystemsPortable Battery-Powered EquipmentComputer EquipmentAdvanced ModemsAutomotive SystemsPortable Long-Time Monitoring EquipmentPoint-of-Sale Equipment(1)Additional temperature ranges available - contact factorySupply 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 RequestBackup-Battery Voltage Can Exceed VDDPower-On Reset Generator with Fixed 100-ms Reset Delay TimeVoltage Monitor for Power-Fail or Low-Battery MonitoringBattery Freshness Seal (TPS3619)Pin-to-Pin Compatible With MAX819, MAX703, and MAX7048-Pin Mini Small-Outline Package (MSOP) PackageSUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONSControlled BaselineOne Assembly/Test SiteOne Fabrication SiteAvailable in Military (–55°C/125°C) Temperature Range(1)Extended Product Life CycleExtended Product-Change NotificationProduct TraceabilityAPPLICATIONSFax MachinesSet-Top BoxesAdvanced Voice-Mail SystemsPortable Battery-Powered EquipmentComputer EquipmentAdvanced ModemsAutomotive SystemsPortable Long-Time Monitoring EquipmentPoint-of-Sale Equipment(1)Additional temperature ranges available - contact factory

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,RESETis asserted when the supply voltage (VDDor VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDDand keepsRESEToutput active as long as VDDremains 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 VDDhas 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,RESETis asserted when the supply voltage (VDDor VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDDand keepsRESEToutput active as long as VDDremains 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 VDDhas 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.