TPS3803-01-EP Datasheet, PDF (1/13 Pages) Texas Instruments – VOLTAGE DETECTOR

TPS3803Ć01ĆEP, TPS3803G15ĆEP, TPS3805H33ĆEP
VOLTAGE DETECTOR
features
D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of Up
to −55°C to 125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree^†
D Single Voltage Detector (TPS3803):
Adjustable/1.5 V
† _{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.
SGLS227B − DECEMBER 2003 − REVISED DECEMBER 2004
D Dual Voltage Detector (TPS3805):
Adjustable/3.3 V
D High ±1.5% Threshold Voltage Accuracy
D Supply Current: 3 µA Typical at V_DD = 3.3 V
D Push/Pull Reset Output (TPS3805)
Open-Drain Reset Output (TPS3803)
D Five-Pin SC−70 Package
typical applications
D Applications Using DSPs, Microcontrollers,
or Microprocessors
D Wireless Communication Systems
D Portable/Battery-Powered Equipment
D Programmable Controls
D Intelligent Instruments
D Industrial Equipment
D Notebook/Desktop Computers
D Automotive Systems
description
The TPS3803 and TPS3805 families of
supervisory circuits provide circuit initialization
and timing supervision, primarily for DSPs and
processor-based systems.
The TPS3803G15 device has a fixed-sense
threshold voltage V_IT set by an internal voltage
divider, whereas the TPS3803−01 has an
adjustable SENSE input that can be configured by
two external resistors. In addition to the fixed
sense threshold monitored at V_DD, the TPS3805
devices provide a second adjustable SENSE
input. RESET is asserted in case any of the two
voltages drops below V_IT.
During power on, RESET is asserted when supply
voltage V_DD becomes higher than 0.8 V.
Thereafter, the supervisory circuit monitors V_DD
(and/or SENSE) and keeps RESET active as long
as V_DD or SENSE remains below the threshold
voltage V_IT. As soon as V_DD (SENSE) rises above
the threshold voltage V_IT, RESET is deasserted
again. The product spectrum is designed for
1.5 V, 3.3 V, and adjustable supply voltages. The
devices are available in a five-pin SC-70 package.
DCK PACKAGE
(TOP VIEW)
TPS3803-01, TPS3803G15, TPS3805
NC 1
GND ²
5 SENSE
NC{
RESET ³
4
V_DD
{_TPS3803G15
typical operating circuit
1.6 V 3.3 V
R1
VDD RESET
TPS3805H33
SENSE _GND
R2
DVDD CVDD
RESET
TMS320VC5416
GND
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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2004 Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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