TPS3851

AKTIV

Hochgenauer Spannungsüberwacher mit integriertem Watchdog-Timer

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Datenblatt

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

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TPS35-Q1

AKTIV

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

TPS3851

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

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

Supply voltage (min) (V)

1.6

Supply voltage (max) (V)

6.5

Rating

Catalog

Watchdog timer WDI (s)

Programmable

Operating temperature range (°C)

-40 to 125

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

Supply voltage (min) (V)

1.6

Supply voltage (max) (V)

6.5

Rating

Catalog

Watchdog timer WDI (s)

Programmable

Operating temperature range (°C)

-40 to 125

VSON (DRB)

8

9 mm² 3 x 3

Input voltage range: V_DD = 1.6 V to 6.5 V
0.8% Voltage threshold accuracy
Low quiescent current: I_DD = 10 µA (typical)
User-programmable watchdog timeout
Open-drain outputs
Precision undervoltage monitoring:
- Supports common rails from 1.8 V to 5.0 V
- 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 3-mm × 3-mm, 8-Pin VSON package
Junction operating temperature range: –40°C to +125°C

Input voltage range: V_DD = 1.6 V to 6.5 V
0.8% Voltage threshold accuracy
Low quiescent current: I_DD = 10 µA (typical)
User-programmable watchdog timeout
Open-drain outputs
Precision undervoltage monitoring:
- Supports common rails from 1.8 V to 5.0 V
- 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 3-mm × 3-mm, 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 (V_ITN) threshold on the VDD pin. 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.

TPS3851 is available in a small 3.00-mm × 3.00-mm, 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 (V_ITN) threshold on the VDD pin. 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.

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

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Evaluierungsplatine

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

The TPS3851EVM-780 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS3851 low-quiescent current, 0.8% accuracy supervisor with integrated window watchdog timer. The EVM circuit board is configured to be a reference design for (...)

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
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Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

	Typ	Titel		Datum
*	Data sheet	TPS3851 Precision Voltage Supervisor with Integrated Watchdog Timer datasheet (Rev. A)	PDF \| HTML	20 Mai 2021
	Application note	Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A)		17 Mär 2020
	Selection guide	Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H)		28 Feb 2020
	E-book	Voltage Supervisor and Reset ICs: Tips, Tricks and Basics		28 Jun 2019
	Technical article	Exploring watchdog timer applications	PDF \| HTML	02 Feb 2017
	Technical article	What is a watchdog timer and why is it important?	PDF \| HTML	11 Jan 2017

TPS3851

Hochgenauer Spannungsüberwacher mit integriertem Watchdog-Timer

Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung

TPS3851

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