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TPS3809J25 PDF预览

TPS3809J25

更新时间： 2024-11-23 22:06:55
品牌 Logo 应用领域
德州仪器 - TI 监控
页数 文件大小 规格书
8页 115K
描述
3-PIN SUPPLY VOLTAGE SUPERVISORS

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TPS3809J25 数据手册

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TPS3809J25, TPS3809L30, TPS3809K33, TPS3809I50  
3-PIN SUPPLY VOLTAGE SUPERVISORS  
SLVS228 – AUGUST 1999  
TPS3809 . . . DBV PACKAGE  
(TOP VIEW)  
3-Pin SOT-23 Package  
Supply Current of 9 µA (Typical)  
1
GND  
Precision Supply Voltage Monitor  
2.5 V, 3 V, 3.3 V, 5 V  
3
V
DD  
Power-On Reset Generator With Fixed  
Delay Time of 200 ms  
2
RESET  
Pin-For-Pin Compatible With MAX 809  
Temperature Range . . . –40°C to 85°C  
description  
The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for  
DSPs and processor-based systems.  
During power-on, RESET is asserted when the supply voltage V becomes higher than 1.1 V. Thereafter, the  
DD  
supervisory circuit monitors V and keeps RESET active as long as V remains below the threshold voltage  
DD  
DD  
V . An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset.  
IT  
The delay time, t  
= 200 ms, starts after V has risen above the threshold voltage V . When the supply  
d(typ)  
DD IT  
voltage drops below the threshold voltage V , the output becomes active (low) again. No external components  
IT  
are required. All the devices of this family have a fixed sense-threshold voltage V set by an internal voltage  
IT  
divider.  
The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available  
in a 3-pin SOT-23. The TPS3809 devices are characterized for operation over a temperature range of –40°C  
to 85°C.  
typical applications  
TPS76333  
3.3 V  
Applications Using DSPs, Microcontrollers,  
or Microprocessors  
5 V  
IN  
OUT  
GND  
V
DD  
Wireless Communication Systems  
Portable/Battery-Powered Equipment  
TMS320LC54x  
V
DD  
TPS3809K33  
RESET  
Programmable Controls  
Intelligent Instruments  
RESET  
GND  
GND  
Industrial Equipment  
Notebook/Desktop Computers  
Automotive Systems  
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.  
Copyright 1999, Texas Instruments Incorporated  
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 include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
12345678

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