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TPS3620-33DGKRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3620-33DGKRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 17 page 1 FEATURES DESCRIPTION APPLICATIONS VBAT RESET MR PFO 8 7 6 5 1 2 3 4 VOUT VDD GND PFI DGK PACKAGE (TOP VIEW) ACTUAL SIZE 3,05 mm x 4,98 mm TYPICAL OPERATING CIRCUIT VDD VBAT PFI Backup Battery RESET PFO VOUT GND Rx Ry External Source 0.1 µF Power Supply GND RESET I/O VCC Switchover Capacitor 0.1 µF TPS3619 TPS3620 Microcontroller or Microprocessor Manual Reset MR TPS3619-33,, TPS3619-50 TPS3620-33, TPS3620-50 SLVS387H – APRIL 2001 – REVISED DECEMBER 2007 www.ti.com BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION 2 • Supply Current of 40 µA (Max) • Battery-Supply Current of 100 nA (Max) The TPS3619 and TPS3620 families of supervisory circuits monitor and control processor activity by • Precision Supply Voltage Monitor 3.3 V, 5 V, providing backup-battery switchover for data retention Other Options on Request of CMOS RAM. • Backup-Battery Voltage Can Exceed V DD During power on, RESET is asserted when the • Power On Reset Generator With Fixed 100-ms supply voltage (VDD or VBAT) becomes higher than 1.1 Reset Delay Time V. Thereafter, the supply voltage supervisor monitors • Voltage Monitor For Power-Fail or Low-Battery VDD and keeps RESET output active as long as VDD Monitoring remains below the threshold voltage (VIT). An internal timer delays the return of the output to the inactive • Battery Freshness Seal (TPS3619) state (high) to ensure proper system reset. The delay • Pin-For-Pin Compatible With MAX819, time starts after VDD has risen above VIT. When the MAX703, and MAX704 supply voltage drops below VIT, the output becomes • 8-Pin MSOP Package active (low) again. • Temperature Range –40°C to +85°C The product spectrum is designed for supply voltages of 3.3 V and 5 V. The TPS3619 and TPS3620 are available in an 8-pin MSOP package and are characterized for operation over a temperature range • Fax Machines of –40 °C to +85°C. • Set-Top Boxes • Advanced Voice Mail Systems • Portable Battery-Powered Equipment • Computer Equipment • Advanced Modems • Automotive Systems • Portable Long-Time Monitoring Equipment • Point-of-Sale Equipment 1 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2001–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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