TPS3850

AKTIV

Präzise Fensterüberwachung für OV- & UV-Überwachung mit Fenster Watchdog-Timer und programmierbare V

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Datenblatt

document-pdfAcrobat TPS3850 Precision Voltage Supervisor with Programmable Window Watchdog Timer datasheet (Rev. B) (Englisch) PDF | HTML

TPS3850

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

0.372, 0.428, 1.116, 1.152, 1.248, 1.284, 1.674, 1.728, 1.872, 1.926, 2.79, 2.88, 3.069, 3.12, 3.168, 3.21, 3.432, 3.531, 4.65, 4.8, 5.2

Features

Reset time delay, Separate VDD & sense, Timeout watchdog, Undervoltage and overvoltage monitor, Watchdog disable, Watchdog timer, Window watchdog

Reset threshold accuracy (%)

0.8

Iq (typ) (mA)

0.01

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

10, 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)

0.372, 0.428, 1.116, 1.152, 1.248, 1.284, 1.674, 1.728, 1.872, 1.926, 2.79, 2.88, 3.069, 3.12, 3.168, 3.21, 3.432, 3.531, 4.65, 4.8, 5.2

Features

Reset time delay, Separate VDD & sense, Timeout watchdog, Undervoltage and overvoltage monitor, Watchdog disable, Watchdog timer, Window watchdog

Reset threshold accuracy (%)

0.8

Iq (typ) (mA)

0.01

Output driver type/reset output

Active-low, Open-drain

Time delay (ms)

10, 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 (DRC)

10

9 mm² 3 x 3

Input voltage range: VDD = 1.6 V to 6.5 V
0.8% Voltage threshold accuracy
Low supply current: I_DD = 10 µA (typical)
User-programmable watchdog timeout
User-programmable reset delay
Factory-programmed precision watchdog and reset timers
Open-drain outputs
Precision over- and undervoltage monitoring:
- Supports common rails from 0.9 V to 5.0 V
- ±4% and ±7% Fault windows available
- 0.5% Hysteresis
Watchdog disable feature
Available in a small 3-mm × 3-mm, 10-Pin VSON package
Junction operating temperature range: –40°C to +125°C

Input voltage range: VDD = 1.6 V to 6.5 V
0.8% Voltage threshold accuracy
Low supply current: I_DD = 10 µA (typical)
User-programmable watchdog timeout
User-programmable reset delay
Factory-programmed precision watchdog and reset timers
Open-drain outputs
Precision over- and undervoltage monitoring:
- Supports common rails from 0.9 V to 5.0 V
- ±4% and ±7% Fault windows available
- 0.5% Hysteresis
Watchdog disable feature
Available in a small 3-mm × 3-mm, 10-Pin VSON package
Junction operating temperature range: –40°C to +125°C

The TPS3850 combines a precision voltage supervisor with a programmable window watchdog timer. The TPS3850 window comparator achieves 0.8% accuracy (–40°C to +125°C) for both overvoltage (V_IT+(OV)) and undervoltage (V_IT–(UV)) thresholds on the SENSE pin. The TPS3850 also includes accurate hysteresis on both thresholds, making the device ideal for use with tight tolerance systems. The supervisor RESET delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The factory-programmed RESET delay features a 9.5% accuracy, high-precision delay timing.

The TPS3850 includes a programmable window 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 window watchdog timeouts can be set by factory-programmed default delay settings, or programmed by an external capacitor. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process.

The TPS3850 is available in a small 3.00-mm × 3.00-mm, 10-pin VSON package.

The TPS3850 combines a precision voltage supervisor with a programmable window watchdog timer. The TPS3850 window comparator achieves 0.8% accuracy (–40°C to +125°C) for both overvoltage (V_IT+(OV)) and undervoltage (V_IT–(UV)) thresholds on the SENSE pin. The TPS3850 also includes accurate hysteresis on both thresholds, making the device ideal for use with tight tolerance systems. The supervisor RESET delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The factory-programmed RESET delay features a 9.5% accuracy, high-precision delay timing.

The TPS3850 includes a programmable window 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 window watchdog timeouts can be set by factory-programmed default delay settings, or programmed by an external capacitor. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process.

The TPS3850 is available in a small 3.00-mm × 3.00-mm, 10-pin VSON package.

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Evaluierungsplatine

TPS3850EVM-781 — TPS3850 Hochpräzisions-Überwacher mit Fenster-Watchdog-Timer – Evaluierungsmodul

The TPS3850EVM-781 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS3850 low-quiescent current (Iq), 0.8% accurate supervisor with integrated watchdog timer.

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TPS3850 PSpice Transient Model (Rev. A)

SBVM649A.ZIP (67 KB) - PSpice Model

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TPS3850 Unencrypted PSpice Transient Model (Rev. A)

SBVM648A.ZIP (9 KB) - PSpice Model

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Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)

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TIDA-01589 — High Fidelity, Nahfeld-Zwei-Wege-Audio-Referenzdesign mit Rauschunterdrückung und Echounterdrückung

Man machine interaction requires an acoustic interface for providing full duplex hands-free communication. In hands-free mode, part of the far-end or near-end audio signal from the speaker is coupled to the microphones. Furthermore, in noisy environments the microphones also capture ambient noise (...)

Design guide: PDF

Schaltplan: PDF

Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
VSON (DRC)	10	Ultra Librarian

Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

	Typ	Titel		Datum
*	Data sheet	TPS3850 Precision Voltage Supervisor with Programmable Window Watchdog Timer datasheet (Rev. B)	PDF \| HTML	09 Sep 2021
	Application note	Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A)		17 Mär 2020
	E-book	Voltage Supervisor and Reset ICs: Tips, Tricks and Basics		28 Jun 2019
	Application note	Comparing Voltage and Processor Monitoring Solutions		05 Apr 2019
	Application note	How Comparator Topology Influences Propagation Delay		05 Apr 2017
	Technical article	Exploring watchdog timer applications	PDF \| HTML	02 Feb 2017

TPS3850

Präzise Fensterüberwachung für OV- & UV-Überwachung mit Fenster Watchdog-Timer und programmierbare V

TPS3850

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