TPS3824

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS3820, TPS3823, TPS3823A, TPS3824, TPS3825, TPS3828 SLVS165L – APRIL 1998 – REVISED JANUARY 2018 TPS382x Voltage Monitor With Watchdog Timer 1 Features 1 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 (Typical) 5-Pin SOT-23 Package Temperature Range: −40°C to 85°C 2 Applications DSPs, Microcontrollers, or Microprocessors Industrial Equipment Programmable Controls Automotive Systems Portable and Battery-Powered Equipment Intelligent Instruments Wireless Communications Systems Notebook and Desktop Computers 3 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 greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than 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−...