TPS3813K33-EP Datasheet, PDF (1/16 Pages) Texas Instruments – PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG

TPS3813J25-EP, TPS3813L30-EP
TPS3813K33-EP, TPS3813I50-EP
www.ti.com
SGLS343A – MAY 2006 – REVISED MAY 2006
PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
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 µA (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
TPS3813
DBV PACKAGE
(TOP VIEW)
WDI 1
6
RESET
GND 2
5
WDR
WDT ³
4
V_DD
ACTUAL SIZE
3,00 mm x 3,00 mm
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 (V_DD) becomes higher than 1.1 V. Thereafter, the
supervisory circuit monitors V_DD and keeps RESET active as long as V_DD remains below the threshold voltage
(V_IT). An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset.
The delay time, t_d = 25 ms typical, starts after V_DD has risen above the threshold voltage (V_IT). When the supply
voltage drops below the threshold voltage (V_IT), the output becomes active (low) again. No external components
are required. All the devices of this family have a fixed-sense threshold voltage (V_IT) set by an internal voltage
divider.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated