Catalog
Battery-backup supervisor for low-power processors
Key Features
• Supply Current of 40 µA (Max)Precision 3.3-V Supply Voltage Monitor Other Voltage Options on RequestWatchdog Timer With 800-ms Time-OutBackup-Battery Voltage Can Exceed VDDPower-On Reset Generator With Fixed 100-ms Reset Delay TimeVoltage Monitor for Power-Fail or Low-Battery MonitoringManual Switchover to Battery-Backup ModeManual ResetBattery Freshness Seal10-Pin MSOP PackageTemperature Range...–40°C to 85°Ctypical applicationsFax MachinesSet-Top BoxesAdvanced Voice Mail SystemsPortable Battery Powered EquipmentComputer EquipmentAdvanced ModemsAutomotive SystemsPortable Long-Time Monitoring EquipmentPoint-of-Sale EquipmentAll trademarks are the property of their respective owners.Supply Current of 40 µA (Max)Precision 3.3-V Supply Voltage Monitor Other Voltage Options on RequestWatchdog Timer With 800-ms Time-OutBackup-Battery Voltage Can Exceed VDDPower-On Reset Generator With Fixed 100-ms Reset Delay TimeVoltage Monitor for Power-Fail or Low-Battery MonitoringManual Switchover to Battery-Backup ModeManual ResetBattery Freshness Seal10-Pin MSOP PackageTemperature Range...–40°C to 85°Ctypical applicationsFax MachinesSet-Top BoxesAdvanced Voice Mail SystemsPortable Battery Powered EquipmentComputer EquipmentAdvanced ModemsAutomotive SystemsPortable Long-Time Monitoring EquipmentPoint-of-Sale EquipmentAll trademarks are the property of their respective owners.
Description
AI
The TPS3606-33 supervisory circuit monitors and controls the processor activity. In case of power-fail or brownout conditions, the backup-battery switchover function of the TPS3606-33 allows a low-power processor and its peripherals to run from the installed backup battery without asserting a reset beforehand.
During power on,RESETis asserted when the supply voltage (VDDor VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VOUTand keeps theRESEToutput active as long as VOUTremains 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 VOUThas risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again.
The TPS3606-33 is available in a 10-pin MSOP package and is characterized for operation over a temperature range of –40°C to 85°C.
The TPS3606-33 supervisory circuit monitors and controls the processor activity. In case of power-fail or brownout conditions, the backup-battery switchover function of the TPS3606-33 allows a low-power processor and its peripherals to run from the installed backup battery without asserting a reset beforehand.
During power on,RESETis asserted when the supply voltage (VDDor VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VOUTand keeps theRESEToutput active as long as VOUTremains 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 VOUThas risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again.
The TPS3606-33 is available in a 10-pin MSOP package and is characterized for operation over a temperature range of –40°C to 85°C.
