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TPS3828-33-Q1 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS3828-33-Q1 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 29 page −40 1.001 1 0.999 0.998 −15 10 35 TA − Free-Air Temperature − C ° 0.997 0.996 0.995 60 85 V DD V DD RESET RESET MR WDI GND GND TPS3823-33 MSP430C325 100 nF 3.3 V I/O Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS3820, TPS3823, TPS3823A, TPS3824, TPS3825, TPS3828 SLVS165K – APRIL 1998 – REVISED NOVEMBER 2015 TPS382x Voltage Monitor With Watchdog Timer 1 Features 3 Description The TPS382x family of supervisors provide circuit 1 • Power-On Reset Generator With Fixed Delay initialization and timing supervision, primarily for DSP Time of 200 ms (TPS3823/4/5/8) or 25 ms and processor-based systems. During power on, (TPS3820) RESET asserts when the supply voltage VDD • Manual Reset Input (TPS3820/3/5/8) becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET • Reset Output Available in Active-Low active low as long as VDD remains less than the (TPS3820/3/4/5), Active-High (TPS3824/5), and threshold voltage, VIT−. An internal timer delays the Open Drain (TPS3828) return of the output to the inactive state (high) to • Supply Voltage Supervision Range: ensure proper system reset. The delay time, td, starts 2.5 V, 3 V, 3.3 V, 5 V after VDD has risen above the threshold voltage (VIT− • Watchdog Timer (TPS3820/3/4/8) + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active • Supply Current of 15 μA (Typical) (low) again. No external components are required. All • 5-Pin SOT-23 Package the devices of this family have a fixed-sense • Temperature Range: −40°C to 85°C threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200 ms (TPS3820) and 1.6 s 2 Applications (TPS3823/4/8). • DSPs, Microcontrollers, or Microprocessors • Industrial Equipment Device Information(1) • Programmable Controls PART NUMBER PACKAGE BODY SIZE (NOM) • Automotive Systems TPS382x SOT-23 (5) 2.90 mm × 1.60 mm • Portable and Battery-Powered Equipment (1) For all available packages, see the orderable addendum at the end of the data sheet. • Intelligent Instruments • Wireless Communications Systems • Notebook and Desktop Computers Typical Application Schematic Normalized Input Threshold Voltage vs Free-Air Temperature 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. |
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