TPS3800-xx
TPS3801-xx
TPS3802-xx
www.ti.com
SLVS219C–AUGUST 1999–REVISED JULY 2003
ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS
FEATURES
DESCRIPTION
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Small, 5-Pin SC-70 (SOT-323) Package
The TPS380x family of supervisory circuits monitor
supply voltages to provide circuit initialization and
timing supervision, primarily for DSPs and other pro-
cessor-based systems.
Supply Current of 9 µA
Power-On Reset Generator With Fixed Delay
Time
These devices assert a push-pull RESET signal when
the SENSE (adjustable version) or VDD (fixed version)
drops below a preset threshold. The RESET output
remains asserted for the factory programmed delay
time after the SENSE or VDD return above its threshold.
– TPS3800 = 100 ms
– TPS3801 = 200 ms
– TPS3802 = 400 ms
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Precision Supply Voltage Monitor 1.8 V, 2.5 V,
2.7 V, 3 V, 3.3 V, 5 V, and Adjustable
The TPS380x devices, except the TPS3801-01, incor-
porate a manual reset input (MR). A low level at MR
causes RESET to become active.
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Manual Reset Input (Except TPS3801-01)
Temperature Range: -40°C to 85°C
The TPS380x uses a precision reference to achieve an
overall threshold accuracy of 2% - 2.5%. These devices
are available in a 5-pin SC-70 package, which is only
about half the size of a 5-pin SOT-23 package.
APPLICATIONS
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Applications Using DSPs, Microcontrollers, or
Microprocessors
The TPS380x devices are fully specified over a tem-
perature range of -40°C to 85°C.
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Wireless Communication Systems
Portable/Battery-Powered Equipment
Programmable Controls
Intelligent Instruments
Industrial Equipment
Notebook/Desktop Computers
Automotive Systems
TPS380x . . . DCK PACKAGE
typical applications
(TOP VIEW)
V
DD
= 1.8 V
1
2
3
5
4
MR
GND
GND
CoreV
100 nF
DD
TMS320VC5420
V
DD
V
DD
RESET
TPS3801E18
MR RESET
RESET
GND
TPS3801−01. . . DCK PACKAGE
(TOP VIEW)
GND
1
2
3
5
SENSE
GND
GND
4
V
DD
RESET
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 in-
cludetestingofallparameters.
Copyright © 1999–2003, Texas Instruments Incorporated