TPS3801-01 Datasheet, PDF (1/11 Pages) Texas Instruments – ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS

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TPS3800-xx
TPS3801-xx
TPS3802-xx
SLVS219C – AUGUST 1999 – REVISED JULY 2003
ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS
FEATURES
DESCRIPTION
• Small, 5-Pin SC-70 (SOT-323) Package
• Supply Current of 9 µA
• Power-On Reset Generator With Fixed Delay
Time
– TPS3800 = 100 ms
– TPS3801 = 200 ms
– TPS3802 = 400 ms
• Precision Supply Voltage Monitor 1.8 V, 2.5 V,
2.7 V, 3 V, 3.3 V, 5 V, and Adjustable
• Manual Reset Input (Except TPS3801-01)
• Temperature Range: -40°C to 85°C
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.
These devices assert a push-pull RESET signal when
the SENSE (adjustable version) or V_DD (fixed version)
drops below a preset threshold. The RESET output
remains asserted for the factory programmed delay
time after the SENSE or V_DD return above its threshold.
The TPS380x devices, except the TPS3801-01, incor-
porate a manual reset input (MR). A low level at MR
causes RESET to become active.
APPLICATIONS
• Applications Using DSPs, Microcontrollers, or
Microprocessors
• Wireless Communication Systems
• Portable/Battery-Powered Equipment
• Programmable Controls
• Intelligent Instruments
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.
The TPS380x devices are fully specified over a tem-
perature range of -40°C to 85°C.
• Industrial Equipment
• Notebook/Desktop Computers
• Automotive Systems
TPS380x . . . DCK PACKAGE
(TOP VIEW)
GND
1
5
MR
GND
2
RESET
3
4
V_DD
typical applications
V_DD = 1.8 V
100 nF
V_DD
TPS3801E18
CoreV_DD
TMS320VC5420
TPS3801−01 . . . DCK PACKAGE
(TOP VIEW)
MR RESET
GND
RESET
GND
GND
1
5
SENSE
GND
2
RESET
3
4
V_DD
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-
clude testing of all parameters.
Copyright © 1999 – 2003, Texas Instruments Incorporated