LM809

AKTIV

3-poliger Spannungsüberwacher (Reset-IC) mit Active-Low, Push-Pull-Reset zur Versorgungsüberwachung

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Datenblatt

document-pdfAcrobat LM809/LM810 3-Pin Microprocessor Reset Circuits datasheet (Rev. E) (Englisch) PDF | HTML

LM809

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

2.63, 2.93, 3.08, 4.38, 4.63

Features

Ease-of-use

Reset threshold accuracy (%)

5

Iq (typ) (mA)

0.015

Output driver type/reset output

Active-low, Push-Pull

Time delay (ms)

240

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 105

Rating

Catalog

Number of supplies monitored

1

Threshold voltage 1 (typ) (V)

2.63, 2.93, 3.08, 4.38, 4.63

Features

Ease-of-use

Reset threshold accuracy (%)

5

Iq (typ) (mA)

0.015

Output driver type/reset output

Active-low, Push-Pull

Time delay (ms)

240

Watchdog timer WDI (s)

None

Operating temperature range (°C)

-40 to 105

SOT-23 (DBZ)

3

6.9204 mm² (2.92 mm × 2.37 mm)

Precision Monitoring of Supply Voltages
- Available Threshold Options:
  2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
Superior Upgrade to MAX809 and MAX810
Fully Specified Over Temperature
140-ms Minimum Power-On Reset Pulse Width,
240-ms Typical
- Active-Low RESET Output (LM809)
- Active-High RESET Output (LM810)
Ensured RESET Output Valid for V_CC ≥ 1 V
Low Supply Current, 15-µA Typical
Power Supply Transient Immunity

Precision Monitoring of Supply Voltages
- Available Threshold Options:
  2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
Superior Upgrade to MAX809 and MAX810
Fully Specified Over Temperature
140-ms Minimum Power-On Reset Pulse Width,
240-ms Typical
- Active-Low RESET Output (LM809)
- Active-High RESET Output (LM810)
Ensured RESET Output Valid for V_CC ≥ 1 V
Low Supply Current, 15-µA Typical
Power Supply Transient Immunity

The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

The function of the LM809 and LM810 are to monitor the V_CC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after V_CC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.

Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.

With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.

The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.

The function of the LM809 and LM810 are to monitor the V_CC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after V_CC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.

Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.

With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LM809/LM810 3-Pin Microprocessor Reset Circuits datasheet (Rev. E)	PDF \| HTML	20.04.2016
	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
	Technischer Artikel	Using low-Iq voltage supervisors to extend battery life in handheld electronics	PDF \| HTML	27.09.2019
	E-book	Voltage Supervisor and Reset ICs: Tips, Tricks and Basics		28.06.2019
	Auswahlhilfe	Power Management Guide 2018 (Rev. R)		25.06.2018
	Technischer Artikel	Selecting voltage detectors, supervisors, and reset ICs for system safety: part 1	PDF \| HTML	17.10.2016

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SOT-23 (DBZ)	3	Ultra Librarian

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LM809

3-poliger Spannungsüberwacher (Reset-IC) mit Active-Low, Push-Pull-Reset zur Versorgungsüberwachung

LM809

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