HomedatasheetTPS3828-33DBVR

TPS3828-33DBVR Datasheet

Voltage Monitor With Watchdog Timer
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Description

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− + VHYS). 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. The TPS382x family also offers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).

Features
• 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

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

Features

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Manufacturer information

TEXAS INSTRUMENTS

Texas Instruments introduction - Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.

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