TPS3610U18_16 Datasheet, PDF (1/27 Pages) Texas Instruments – BATTERY-BACKUP SUPERVISORS FOR RAM RETENTION

TPS3610U18, TPS3610T50
BATTERYĆBACKUP SUPERVISORS FOR RAM RETENTION
features
D Supply Current of 40 µA (Max)
D Battery Supply Current of 100 nA (Max)
D Precision Supply-Voltage Monitor,
1.8 V, 5 V; Other Options on Request
D Watchdog Timer With 800-ms Time-Out
D Backup-Battery Voltage Can Exceed V_DD
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 V_DD = 5 V)
Max Propagation Delay
D Battery-Freshness Seal
D 14-pin TSSOP Package
D Temperature Range . . . –40°C to 85°C
SLVS327B – DECEMBER 2000 – REVISED DECEMBER 2002
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
TPS3610
TSSOP (PW) Package
(TOP VIEW)
VOUT
1
VDD
2
GND
3
MSWITCH
4
CEIN
5
BATTON
6
PFI
7
14
VBAT
13
RESET
12
WDI
11
LOWLINE
10
CEOUT
9
BATTOK
8
PFO
typical operating circuit
Power
Supply
0.1 µF
Address
Decoder
External
Source
CEIN CEOUT _Backup
Rx
VDD
VBAT
TPS3610
Battery
PFI
Ry
RESET
WDI
PFO
BATTOK
BATTON
LOWLINE
MSWITCH _VOUT
GND
Switchover
Capacitor
0.1 µF
ACTUAL SIZE
(5,10mm x 6,60mm)
Address Bus
uC
RESET
I/O _{Data Bus}
I/O
I/O
I/O
I/O
VCC
GND
CE
CMOS
RAM
VCC
8
16
CE
CMOS
RAM
VCC
8
Real-
Time
Clock
VCC
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright  2002, Texas Instruments Incorporated
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