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TPS3802-XX

更新时间： 2024-11-23 22:59:27
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德州仪器 - TI 监控
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11页 217K
描述
ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS

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TPS3800-xx  
TPS3801-xx  
TPS3802-xx  
www.ti.com  
SLVS219C–AUGUST 1999–REVISED JULY 2003  
ULTRA-SMALL SUPPLY VOLTAGE SUPERVISORS  
FEATURES  
DESCRIPTION  
•
•
•
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  
•
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.  
•
•
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  
•
Applications Using DSPs, Microcontrollers, or  
Microprocessors  
The TPS380x devices are fully specified over a tem-  
perature range of -40°C to 85°C.  
•
•
•
•
•
•
•
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  
1234567...11

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