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TPS3803-01 PDF预览

TPS3803-01

更新时间: 2024-11-23 22:59:27
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德州仪器 - TI /
页数 文件大小 规格书
12页 256K
描述
VOLTAGE DETECTOR

TPS3803-01 数据手册

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TPS3803-01, TPS3803G15, TPS3805H33  
VOLTAGE DETECTOR  
SLVS392 – JULY 2001  
features  
typical applications  
D
Single Voltage Detector (TPS3803):  
Adjustable/1.5 V  
D
Applications Using DSPs, Microcontrollers,  
or Microprocessors  
D
Dual Voltage Detector (TPS3805):  
Adjustable/3.3 V  
D
D
D
D
D
D
D
Wireless Communication Systems  
Portable/Battery-Powered Equipment  
Programmable Controls  
D
D
D
High ±1.5% Threshold Voltage Accuracy  
Supply Current: 3 µA Typical at V  
= 3.3 V  
DD  
Intelligent Instruments  
Push/Pull Reset Output (TPS3805)  
Open-Drain Reset Output (TPS3803)  
Industrial Equipment  
Notebook/Desktop Computers  
Automotive Systems  
D
D
Temperature Range . . . –40°C to 85°C  
Five-Pin SC–70 Package  
DCK PACKAGE  
(TOP VIEW)  
description  
TPS3803-01, TPS3803G15, TPS3805  
The TPS3803 and TPS3805 families of supervi-  
1
2
3
5
NC  
SENSE  
NC{  
sory circuits provide circuit initialization and timing  
supervision, primarily for DSPs and processor-  
based systems.  
GND  
RESET  
{
4
The TPS3803G15 device has a fixed-sense  
V
DD  
threshold voltage V set by an internal voltage  
IT  
TPS3803G15  
divider, whereas the TPS3803–01 has an  
adjustable SENSE input that can be configured by  
two external resistors. In addition to the fixed  
typical operating circuit  
sense threshold monitored at V , the TPS3805  
DD  
devices provide a second adjustable SENSE  
input. RESET is asserted in case any of the two  
1.6 V 3.3 V  
voltages drops below V  
IT.  
DV  
CV  
DD  
DD  
RESET  
During power on, RESET is asserted when supply  
voltage V becomes higher than 0.8 V.  
R1  
R2  
V
RESET  
TPS3805H33  
SENSE  
DD  
DD  
Thereafter, the supervisory circuit monitors V  
DD  
(and/or SENSE) and keeps RESET active as long  
as V or SENSE remains below the threshold  
TMS320VC5416  
GND  
GND  
DD  
voltage V . As soon as V  
(SENSE) rises above  
IT  
DD  
the threshold voltage V , RESET is deasserted  
IT  
again. The product spectrum is designed for  
1.5 V, 3.3 V, and adjustable supply voltages. The  
devices are available in a five-pin SC-70 package.  
The TPS3803 and TPS3805 devices are  
characterized for operation over a temperature  
range of –40°C to 85°C.  
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 2001, 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  

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