TLV840

AKTIV

Niederspannungsüberwacher mit zeitverzögertem einstellbarem Reset und manuellem Reset

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Datenblatt

document-pdfAcrobat TLV840 Low Voltage Supervisor with Adjustable Reset Time Delay and Manual Reset datasheet (Rev. C) (Englisch)

TLV840

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2

Features

Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only

Reset threshold accuracy (%)

1

Iq (typ) (mA)

0.0001

Output driver type/reset output

Active-low, Open-drain, Push-Pull

Time delay (ms)

0, 0.04

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2

Features

Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only

Reset threshold accuracy (%)

1

Iq (typ) (mA)

0.0001

Output driver type/reset output

Active-low, Open-drain, Push-Pull

Time delay (ms)

0, 0.04

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 125

SOT-23 (DBV)

5

8.12 mm² (2.9 mm × 2.8 mm)

Operating voltage range : 0.7 V to 6 V
Nano supply current : 120 nA (Typical)
Fixed threshold voltage (V_IT-): 0.8 V to 5.4 V
- Threshold voltages available in 100mV steps
- High accuracy: ±0.5% (Typical)
- Built-in hysteresis (V_HYS): 5% (Typical)
Reset time delay (t_D): capacitor-based programmable (TLV840C, TLV840M)
- Minimum time delay: 40 µs (typical) without capacitor
Active-low manual reset (MR) (TLV840M)
Four output topologies:
- TLV840xxDL: open-drain, active-low (RESET)
- TLV840xxPL: push-pull, active-low (RESET)
- TLV840xxDH: open-drain, active-high (RESET)
- TLV840xxPH: push-pull, active-high (RESET)
Wide temperature range: –40°C to +125°C
Package: SOT23-5 (DBV)

Operating voltage range : 0.7 V to 6 V
Nano supply current : 120 nA (Typical)
Fixed threshold voltage (V_IT-): 0.8 V to 5.4 V
- Threshold voltages available in 100mV steps
- High accuracy: ±0.5% (Typical)
- Built-in hysteresis (V_HYS): 5% (Typical)
Reset time delay (t_D): capacitor-based programmable (TLV840C, TLV840M)
- Minimum time delay: 40 µs (typical) without capacitor
Active-low manual reset (MR) (TLV840M)
Four output topologies:
- TLV840xxDL: open-drain, active-low (RESET)
- TLV840xxPL: push-pull, active-low (RESET)
- TLV840xxDH: open-drain, active-high (RESET)
- TLV840xxPH: push-pull, active-high (RESET)
Wide temperature range: –40°C to +125°C
Package: SOT23-5 (DBV)

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (t_{p_HL}= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (V_IT-). Reset signal is cleared when VDD rise above V_IT- plus hysteresis (V_HYS) and the reset time delay (t_D) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (V_POR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (I_lkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (t_{p_HL}= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (V_IT-). Reset signal is cleared when VDD rise above V_IT- plus hysteresis (V_HYS) and the reset time delay (t_D) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (V_POR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (I_lkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	TLV840 Low Voltage Supervisor with Adjustable Reset Time Delay and Manual Reset datasheet (Rev. C)		13.08.2020
	Technischer Artikel	Three reasons to add a voltage supervisor to your next wearable power design	PDF \| HTML	17.06.2021
	Anwendungshinweis	Back-up Power Supply Switchover with Supply Voltage Supervisor & Power & Power M		09.04.2020
	Anwendungshinweis	Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions		10.03.2020
	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

Design und Entwicklung

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Evaluierungsplatine

TLV840EVM — TLV840 – Evaluierungsmodul für Niederspannungsüberwacher mit einstellbarer Rückstellzeitverzögerung

Das TLV840-Evaluierungsmodul (EVM) wurde zur Auswertung der Leistung des TLV840-Bausteins entwickelt, bei dem es sich um einen 5-poligen Spannungsüberwacher und Reset-IC handelt. Der TLV840 bietet einen Betrieb bis zu 6 V bei gleichzeitig niedrigem Ruhestrom von 1,2 µA (max.) zusätzlich zur (...)

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