BATTERY-BACKUP SUPERVISORS
TPS3600D20, TPS3600D25, TPS3600D33, TPS3600D50 BATTERYĆBACKUP SUPERVISORS FOR LOWĆPOWER PROCESSORS
features
D Supply Cu...
Description
TPS3600D20, TPS3600D25, TPS3600D33, TPS3600D50 BATTERYĆBACKUP SUPERVISORS FOR LOWĆPOWER PROCESSORS
features
D Supply Current of 40 µA (Max) D Precision Supply Voltage Monitor
− 2.0 V, 2.5 V, 3.3 V, 5.0 V − Other Versions on Request
D Watchdog Timer With 800-ms Time-Out D Backup-Battery Voltage Can Exceed VDD D Power-On Reset Generator With Fixed
100-ms Reset Delay Time
D Battery OK Output D Voltage Monitor for Power-Fail or
Low-Battery Monitoring
D Manual Switchover to Battery-Backup
Mode
D Chip-Enable Gating −3 ns (at VDD = 5 V)
Max. Propagation Delay
D Manual Reset D Battery Freshness Seal D 14-Pin TSSOP Package D Temperature Range . . . −40°C to 85°C
typical operating circuit
SLVS336B − DECEMBER 2000 − REVISED JANUARY 2007
typical applications
D Fax Machines D Set-Top Boxes D Advanced Voice Mail Systems D Portable Battery Powered Equipment D Computer Equipment D Advanced Modems D Automotive Systems D Portable Long-Time Monitoring Equipment D Point of Sale Equipment
TSSOP (PW) Package (TOP VIEW)
VOUT VDD GND
MSWITCH
CEIN
BATTON
PFI
1 2 3 4 5 6 7
14 VBAT 13 RESET 12 WDI 11 MR 10 CEOUT
9 BATTOK 8 PFO
ACTUAL SIZE (5,10mm x 6,60mm)
Power Supply
0.1 µF
Address Decoder
External Source
Manual Reset
CEIN CEOUT Backup
Rx
VDD
VBAT
TPS3600
Battery
PFI
Address Bus uC
Ry
RESET WDI
PFO
RESET
I/O Data Bus I/O
BATTOK
I/O
MR BATTON
MSWITCH VOUT GND
Switchover Capacitor
0.1 µF
I/O
VCC GND
CE CMOS RAM VCC 8
16
CE CMOS RAM VCC
8
RealTime Clock
VCC
Please be aware...
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