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TPS3851G50SDRBT Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS3851G50SDRBT
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

TPS3851G50SDRBT Fiches technique(HTML) 1 Page - Texas Instruments

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Temperature (qC)
-50
-25
0
25
50
75
100
125
-0.5
-0.3
-0.1
0.1
0.3
0.5
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Average
RESET
VDD
GND
TPS3851
1.8 V
Microcontroller
SET1
VDD
RESET
GND
WDO
NMI
CWD
MR
WDI
GPIO
Copyright © 2016, Texas Instruments Incorporated
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TPS3851
SBVS300 – NOVEMBER 2016
TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer
1
1 Features
1
0.8% Voltage Threshold Accuracy
Precision Undervoltage Monitoring:
Supports Common Rails from 1.8 V to 5.0 V
4% and 7% Undervoltage Thresholds
Available
0.5% Hysteresis
Factory-Programmed Precision Watchdog and
Reset Timers:
±15% Accurate WDT and RST Delays
Watchdog Disable Feature
User-Programmable Watchdog Timeout
Input Voltage Range: VDD = 1.6 V to 6.5 V
Low Quiescent Current: IDD = 10 µA (typ)
Open-Drain Outputs
Manual Reset Input (MR)
Available in a Small 3-mm × 3-mm, 8-Pin VSON
Package
Junction Operating Temperature Range:
–40°C to +125°C
2 Applications
Safety-Critical Applications
Telematics Control Units
FPGAs and ASICs
Microcontrollers and DSPs
3 Description
The
TPS3851
combines
a
precision
voltage
supervisor with a programmable watchdog timer. The
TPS3851 comparator achieves a 0.8% accuracy
(–40°C to +125°C) for the undervoltage (VITN)
threshold. The TPS3851 also includes accurate
hysteresis on the undervoltage threshold making the
device ideal for use with tight tolerance systems. The
supervisor RESET delay features a 15% accuracy,
high-precision delay timing.
The TPS3851 includes a programmable watchdog
timer for a wide variety of applications. The dedicated
watchdog output (WDO) enables increased resolution
to help determine the nature of fault conditions. The
watchdog timeouts can be programmed either by an
external capacitor, or by factory-programmed default
delay settings. The watchdog can be disabled via
logic pins to avoid undesired watchdog timeouts
during the development process.
The TPS3851 is available in a small 3.00-mm ×
3.00-mm, 8-pin VSON package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3851
VSON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Fully Integrated Microcontroller Supervisory
Circuit
Undervoltage Threshold (VITN) Accuracy vs
Temperature


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