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TPS3820-33DBVRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS3820-33DBVRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 20 page RESET MR WDI 100 nF VDD GND TPS3823-33 VDD RESET I/O GND MSP430C325 3.3 V 3 2 4 5 TPS3820, TPS3823, TPS3828: DBV PACKAGE TPS3820A, TPS3823A, TPS3828A: DBV PACKAGE (TOP VIEW) 1 RESET GND MR VDD WDI 3 2 4 5 TPS3825 and TPS3825A: DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD MR 3 2 4 5 TPS3824 and TPS3824A: DBV PACKAGE (TOP VIEW) 1 RESET GND RESET VDD WDI TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 Processor Supervisory Circuits Check for Samples: TPS382x-xx, TPS382xA-xx 1 FEATURES 2 • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820) • Manual Reset Input (TPS3820/3/5/8) • Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5) and Open-Drain (TPS3828) • Supply Voltage Supervision Range: 2.5 V, 3 V, 3.3 V, 5 V • Watchdog Timer (TPS3820/3/4/8) • Supply Current of 15 μA (Typ) • SOT23-5 Package • Temperature Range: −40°C to 85°C APPLICATIONS • Applications Using DSPs, Microcontrollers, or Microprocessors • Industrial Equipment • Programmable Controls • Automotive Systems • Portable/Battery-Powered Equipment • Intelligent Instruments • Wireless Communications Systems • Notebook/Desktop Computers TYPICAL APPLICATION 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. 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. UNLESS OTHERWISE NOTED this document contains Copyright © 1998–2013, Texas Instruments Incorporated PRODUCTION DATA information 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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