TPS3800-xx
TPS3801-xx
TPS3802-xx
www.ti.com
SLVS219E – AUGUST 1999 – REVISED OCTOBER 2010
ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS
Check for Samples: TPS3800-xx, TPS3801-xx, TPS3802-xx
FEATURES
1
•
•
•
2
•
•
•
Small, 5-Pin SC-70 (SOT-323) Package
Supply Current of 9 mA
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
APPLICATIONS
•
•
•
•
•
•
•
•
Applications Using DSPs, Microcontrollers, or
Microprocessors
Wireless Communication Systems
Portable/Battery-Powered Equipment
Programmable Controls
Intelligent Instruments
Industrial Equipment
Notebook/Desktop Computers
Automotive Systems
DESCRIPTION
The TPS380x family of supervisory circuits monitor
supply voltages to provide circuit initialization and
timing supervision, primarily for DSPs and other
processor-based systems.
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.
The TPS380x devices, except the TPS3801-01,
incorporate a manual reset input (MR). A low level at
MR causes RESET to become active.
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
temperature range of –40°C to +85°C.
TPS380x . . . DCK PACKAGE
(TOP VIEW)
GND
1
5
MR
VDD = 1.8 V
100 nF
GND
2
RESET
3
CoreVDD
TMS320VC5420
VDD
4
VDD
TPS3801E18
MR
TPS3801−01 . . . DCK PACKAGE
(TOP VIEW)
GND
1
GND
3
GND
GND
SENSE
4
RESET
VDD
2
RESET
5
RESET
1
2
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.
All trademarks are the property of their respective owners.
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 © 1999–2010, Texas Instruments Incorporated
