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TPS3851G25EDRBR Fiches technique(PDF) 11 Page - Texas Instruments

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No de pièce TPS3851G25EDRBR
Description  Precision Voltage Supervisor with Integrated Watchdog Timer
Download  31 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS3851G25EDRBR Fiches technique(HTML) 11 Page - Texas Instruments

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VDD
Precision
Clock
State
Machine
Cap
Control
CWD
GND
VDD
WDI
MR
SET1
WDO
RESET
Reference
R1
R2
11
TPS3851
www.ti.com
SBVS300 – NOVEMBER 2016
Product Folder Links: TPS3851
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The TPS3851 is a high-accuracy voltage supervisor with an integrated watchdog timer. This device includes a
precision undervoltage supervisor with a threshold that achieves 0.8% accuracy over the specified temperature
range of –40°C to +125°C. In addition, the TPS3851 includes accurate hysteresis on the threshold, making the
device ideal for use with tight tolerance systems where voltage supervisors must ensure a RESET before the
minimum supply tolerance of the microprocessor or system-on-a-chip (SoC) is reached. There are two options
for the watchdog timing standard and extended timing. To get standard timing use the TPS3851Xyy(y)S, for
extended timing use the TPS3851Xyy(y)E.
7.2 Functional Block Diagram
(1)
Note: R1 + R2 = 4.5 MΩ.


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