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ꢍꢎ ꢏꢀꢐꢊ ꢈ ꢑ ꢈꢀ ꢈꢒ ꢀꢎ ꢓ
SGLS227B − DECEMBER 2003 − REVISED DECEMBER 2004
D
Dual Voltage Detector (TPS3805):
Adjustable/3.3 V
features
D
Controlled Baseline
D
D
D
High 1.5% Threshold Voltage Accuracy
− One Assembly/Test Site, One Fabrication
Site
Supply Current: 3 µA Typical at V
= 3.3 V
DD
D
D
Extended Temperature Performance of Up
to −55°C to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
Push/Pull Reset Output (TPS3805)
Open-Drain Reset Output (TPS3803)
D
Five-Pin SC−70 Package
typical applications
D
D
D
Enhanced Product-Change Notification
†
Qualification Pedigree
D
Applications Using DSPs, Microcontrollers,
or Microprocessors
Single Voltage Detector (TPS3803):
Adjustable/1.5 V
D
D
D
D
D
D
D
Wireless Communication Systems
Portable/Battery-Powered Equipment
Programmable Controls
†
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.
Intelligent Instruments
Industrial Equipment
Notebook/Desktop Computers
Automotive Systems
description
DCK PACKAGE
(TOP VIEW)
The TPS3803 and TPS3805 families of
TPS3803-01, TPS3803G15, TPS3805
supervisory circuits provide circuit initialization
and timing supervision, primarily for DSPs and
processor-based systems.
1
2
3
5
NC
GND
SENSE
NC{
The TPS3803G15 device has a fixed-sense
threshold voltage V 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
4
IT
RESET
V
DD
{
TPS3803G15
sense threshold monitored at V , the TPS3805
devices provide a second adjustable SENSE
input. RESET is asserted in case any of the two
DD
typical operating circuit
1.6 V 3.3 V
voltages drops below V
IT.
During power on, RESET is asserted when supply
voltage V becomes higher than 0.8 V.
DV
CV
DD
DD
RESET
DD
R1
Thereafter, the supervisory circuit monitors V
V
RESET
TPS3805H33
SENSE
DD
DD
(and/or SENSE) and keeps RESET active as long
as V or SENSE remains below the threshold
TMS320VC5416
GND
DD
voltage V . As soon as V
(SENSE) rises above
IT
DD
GND
the threshold voltage V , RESET is deasserted
R2
IT
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.
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.
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Copyright 2004 Texas Instruments Incorporated
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