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TPS3610T50PWR Datasheet(PDF) 2 Page - Texas Instruments |
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TPS3610T50PWR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 27 page TPS3610U18, TPS3610T50 BATTERY BACKUP SUPERVISORS FOR RAM RETENTION SLVS327B – DECEMBER 2000 – REVISED DECEMBER 2002 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description The TPS3610 family of supervisory circuits monitors and controls processor activity by providing backup-battery switchover for data retention of CMOS RAM. Other features include an additional power-fail comparator, low-line indication, watchdog function, battery-status indicator, manual switchover, and write protection for CMOS RAM. The TPS3610 family allow usage of 3-V or 3.6-V lithium batteries as the backup supply in systems with, e.g., VDD = 1.8 V. During power-on, RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1 V. Thereafter, the supply-voltage supervisor monitors VDD and keeps RESET output active as long as VDD remains 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 VDD has risen above the threshold voltage VIT. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. The product spectrum is designed for supply voltages of 1.8 V and 5 V. The circuits are available in a 14-pin TSSOP package. TPS3610 devices are characterized for operation over a temperature range of –40 °C to 85°C. standard and application-specific versions (see Note 1) Tape and Reel TI Package Designator Nominal Supply Voltage Nominal Battok Threshold Voltage R PW 18 TPS3610U APPLICATION-SPECIFIC VERSIONS, NOMINAL SUPPLY AND BATTOK VOLTAGE TA NOMINAL SUPPLY VOLTAGE, VDD(NOM) (V) NOMINAL BATTOK THRESHOLD VOLTAGE, VIT(BOK) (V) PACKAGED DEVICES TSSOP (PW)† 40 °Cto85°C 1.8 1.6 TPS3610U18PWR –40 °C to 85°C 5 2.4 TPS3610T50PWR † The PW package is only available taped and reeled (indicated by the R suffix on the device type). NOTE 1: For other NOMINAL and BATTOK voltage versions, contact your local TI sales office for availability and order lead time. |
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