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TPS3779DDBVR Datasheet(PDF) 10 Page - Texas Instruments

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No. de Pieza. TPS3779DDBVR
Descripción  Dual-Channel, Low-Power, High-Accuracy Voltage Detectors
Descarga  28 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS3779DDBVR Datasheet(HTML) 10 Page - Texas Instruments

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SENSE1
GND
VDD
OUT1
VIT+
SENSE2
OUT2
TPS3779
SENSE1
GND
VDD
OUT1
VIT+
SENSE2
OUT2
TPS3780
TPS3779, TPS3780
SBVS250 – APRIL 2015
www.ti.com
8 Detailed Description
8.1 Overview
The TPS3779 and TPS3780 are a family of small, low quiescent current (IDD), dual-channel voltage detectors.
These devices have high-accuracy, rising and falling input thresholds, and assert the output as shown in Table 1.
The output (OUTx pin) goes low when the SENSEx pin is less than VIT– and goes high when the pin is greater
than VIT+. The TPS3779 and TPS3780 offer multiple hysteresis options from 0.5% to 10% for use in a wide
variety of applications. These devices have two independent voltage detection channels that can be used in
systems where multiple voltage rails are required to be monitored, or where one channel can be used as an early
warning signal and the other channel used as the system reset signal.
Table 1. TPS3779, TPS3780 Truth Table
CONDITIONS
OUTPUT
SENSE1 < VIT–
OUT1 = low
SENSE2 < VIT–
OUT2 = low
SENSE1 > VIT+
OUT1 = high
SENSE2 > VIT+
OUT2 = high
8.2 Functional Block Diagrams
Figure 20. TPS3779 Block Diagram
Figure 21. TPS3780 Block Diagram
10
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Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: TPS3779 TPS3780


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