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TS944ID ,OUTPUT RAIL TO RAIL MICROPOWER OPERATIONAL AMPLIFIERSABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit1)V12 VCC Supply voltage 2)V±12 Vid Differ ..
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TPS3617-50DGK-TPS3617-50DGKG4-TPS3617-50DGKR
Battery-Backup Supervisors for RAM Retention
www.ti.com
FEATURES DESCRIPTION
APPLICATIONS
VDD VBAT
PFI
Backup
Battery
RESET
WDI
PFO
VOUT
GND
External
Source
0.1 μF
Power
Supply
GND
RESET
I/O
I/O
VCC
Switchover
Capacitor
0.1 μF
TPS3617
TPS3618
Microcontroller
Microprocessor
ACTUAL SIZE
3,05 mm x 4,98 mmVBAT
RESET
WDI
PFO
VOUT
VDD
GND
PFI
MSOP (DGK) Package
(TOP VIEW)
TPS3617
TPS3618
SLVS339D–DECEMBER 2000–REVISED DECEMBER 2006
BATTERY-BACKUP SUPERVISOR FOR RAM RETENTION Supply Currentof40 μA
(Max) The TPS3617 and TPS3618 are battery-backup
supervisors that monitor5V supplies. They provide•
Battery Supply Currentof 100 nA (Max) battery-backup function ideal for applications that•
Precision 5-V Supply Voltage Monitor, Other require data retentionof CMOS RAM during fault
Voltage Options on Request conditions. When the voltageat VDD drops belowa•
Backup-Battery Voltage Can ExceedVDD preset threshold (VIT), the active low push-pull
RESET output asserts, and VOUT switches from VDD•
Watchdog Timer With 800-ms Time-Out VBAT. When VDD rises above the trip threshold,•
Power-On Reset Generator With Fixed 100-ms VOUT switches immediately from VBAT to VDD.
Reset Delay Time The RESET output remains low until the delay time•
Voltage Monitor for Power-Failor Low-Battery (td) expires. During power on, RESETis asserted
Monitoring when the supply voltage (VDDor VBAT) goes higher
than 1.1V.•
Battery Freshness Seal (TPS3617 Only) 8-Pin MSOP Package The PFI and PFO pins are providedif additional
voltage monitoringis needed.If the voltageat PFIis•
Temperature Range: –40°to +85°C less than 1.15V, the push-pull PFO pin will assert When the voltageat PFI exceeds the threshold PFO will go high.•
Fax devices also featurea watchdog timer pin•
Set-Top that monitors processor activity and asserts•
Advanced Mail Systemsif the the processoris inactive longer than•
Portable Powered Equipment watchdog timeout period.If the watchdog timeris
Computer used, the WDI pin shouldbe left floating.
Advanced TPS3617 and TPS3618 are availableinan 8-pin•
Automotive package and are characterized for operationa temperature rangeof –40°Cto +85°C.•
Portable Monitoring Equipment Point-of-Sale Equipment
