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TPS3823-50DBVTG4 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS3823-50DBVTG4 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 17 page FEATURES D Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820) D Manual Reset Input (TPS3820/3/5/8) D Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5) and Open-Drain (TPS3828) D Supply Voltage Supervision Range: 2.5 V, 3 V, 3.3 V, 5 V D Watchdog Timer (TPS3820/3/4/8) D Supply Current of 15 µA (Typ) D SOT23-5 Package D Temperature Range: −40°C to +85°C APPLICATIONS D Applications Using DSPs, Microcontrollers, or Microprocessors D Industrial Equipment D Programmable Controls D Automotive Systems D Portable/Battery-Powered Equipment D Intelligent Instruments D Wireless Communications Systems D Notebook/Desktop Computers DESCRIPTION The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET asserts when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET 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, td, 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. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT−, set by an internal voltage divider. 3 2 4 5 TPS3820, TPS3823, TPS3828: DBV PACKAGE (TOP VIEW) 1 RESET GND MR VDD WDI 3 2 4 5 TPS3825: DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD MR 3 2 4 5 TPS3824: DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD WDI RESET MR WDI 100 nF VDD GND TPS3823-33 VDD RESET I/O GND MSP430C325 3.3 V TYPICAL APPLICATION www.ti.com TPS3820-xx, TPS3823-xx, TPS3824-xx, TPS3825-xx, TPS3828-xx SLVS165G − APRIL 1998 − REVISED JANUARY 2008 PROCESSOR SUPERVISORY CIRCUITS 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. www.ti.com Copyright 2001−2007, Texas Instruments Incorporated 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. All trademarks are the property of their respective owners. |
Numéro de pièce similaire - TPS3823-50DBVTG4 |
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Description similaire - TPS3823-50DBVTG4 |
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