FEATURES

· Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

· Extended Temperature Performance of -55°C

to 125°C

· Enhanced Diminishing Manufacturing

Sources (DMS) Support

· Enhanced Product-Change Notification

· Qualification Pedigree (1)

· Window-Watchdog With Programmable Delay

and Window Ratio

· 6-Pin SOT-23 Package

· Supply Current of 9 mA (Typ)

· Power On Reset Generator With a Fixed

Delay Time of 25 ms

· Precision Supply Voltage Monitor 2.5 V, 3 V,

3.3 V, 5 V

· Open-Drain Reset Output

(1) Component qualification in accordance with JEDEC and

industry standards to ensure reliable operation over an

extended temperature range. This includes, but is not limited

to, Highly Accelerated Stress Test (HAST) or biased 85/85,

temperature cycle, autoclave or unbiased HAST,

electromigration, bond intermetallic life, and mold compound

life. Such qualification testing should not be viewed as

justifying use of this component beyond specified

performance and environmental limits.

APPLICATIONS

· Applications Using DSPs, Microcontrollers,

or Microprocessors

· Safety Critical Systems

· Automotive Systems

· Healing Systems

DESCRIPTION

The TPS3813 family of supervisory circuits provides circuit initialization and timing supervision, primarily for

DSPs and processor-based systems.

During power on, RESET is asserted when supply voltage (VDD) becomes higher than 1.1 V. Thereafter, the

supervisory circuit 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 = 25 ms typical, 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.