TPS3851

AKTIV

Hochgenauer Spannungsüberwacher mit integriertem Watchdog-Timer

Jetzt bestellen

Datenblatt

document-pdfAcrobat TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer datasheet (Rev. B) (Englisch) PDF | HTML

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.

TPS35-Q1

AKTIV

Präzisionsüberwacher mit Nano-Ruhestrom und Timeout-Watchdog-Timer für die Automobilindustrie 250-nA IQ, enhanced watchdog accuracy, compact packaging, and on-the-fly programming

TPS3851

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

1.674, 1.728, 2.325, 2.4, 2.79, 2.88, 3.069, 3.168, 4.65, 4.8

Features

Manual reset capable, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer

Reset threshold accuracy (%)

0.8

Iq (typ) (mA)

0.01

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

200

Watchdog timer WDI (s)

Programmable

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

1.674, 1.728, 2.325, 2.4, 2.79, 2.88, 3.069, 3.168, 4.65, 4.8

Features

Manual reset capable, Timeout watchdog, Undervoltage monitor only, Watchdog disable, Watchdog timer

Reset threshold accuracy (%)

0.8

Iq (typ) (mA)

0.01

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

200

Watchdog timer WDI (s)

Programmable

Operating temperature range (°C)

-40 to 125

VSON (DRB)

8

9 mm² (3 mm × 3 mm)

Input voltage range: VDD = 1.6V to 6.5V
0.8% Voltage threshold accuracy
Low quiescent current: IDD = 10µA (typical)
User-programmable watchdog timeout
Open-drain outputs
Precision undervoltage monitoring:
- Supports common rails from 1.8V to 5.0V
- 4% and 7% Undervoltage thresholds available
- 0.5% Hysteresis
Watchdog disable feature
Factory-programmed precision watchdog and reset timers
Manual reset input (MR)
Available in a small 3mm × 3mm, 8 pin VSON package
Junction operating temperature range: –40°C to +125°C

Input voltage range: VDD = 1.6V to 6.5V
0.8% Voltage threshold accuracy
Low quiescent current: IDD = 10µA (typical)
User-programmable watchdog timeout
Open-drain outputs
Precision undervoltage monitoring:
- Supports common rails from 1.8V to 5.0V
- 4% and 7% Undervoltage thresholds available
- 0.5% Hysteresis
Watchdog disable feature
Factory-programmed precision watchdog and reset timers
Manual reset input (MR)
Available in a small 3mm × 3mm, 8 pin VSON package
Junction operating temperature range: –40°C to +125°C

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 on the VDD pin. The TPS3851 also includes accurate hysteresis on the undervoltage threshold making the device an excellent choice 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.

TPS3851 is available in a small 3.00mm × 3.00mm, 8-pin VSON package.

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 on the VDD pin. The TPS3851 also includes accurate hysteresis on the undervoltage threshold making the device an excellent choice 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.

TPS3851 is available in a small 3.00mm × 3.00mm, 8-pin VSON package.

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer datasheet (Rev. B)	PDF \| HTML	19.06.2025
	Anwendungshinweis	Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A)		17.03.2020
	Auswahlhilfe	Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H)		28.02.2020
	E-book	Voltage Supervisor and Reset ICs: Tips, Tricks and Basics		28.06.2019
	Technischer Artikel	Exploring watchdog timer applications	PDF \| HTML	02.02.2017
	Technischer Artikel	What is a watchdog timer and why is it important?	PDF \| HTML	11.01.2017

TPS3851EVM-780 — TPS3851 hochpräziser Überwacher mit Fenster-Watchdog – Evaluierungsmodul

Das Evaluierungsmodul (EVM) TPS3851EVM-780 wurde für eine typische Konfiguration zur Evaluierung des Betriebs und der Leistung des Überwachers TPS3851 mit niedrigem Ruhestrom, 0,8 % Genauigkeit und integriertem Watchdog-Timer entwickelt. Die EVM-Platine ist als Referenzdesign für technische (...)

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