Inicio Gestión de la energía Supervisor & reset ICs

LM809

ACTIVO

Supervisor de tensión de 3 pines (IC de reinicio), con reinicio activo-bajo e inserción y extracción

Detalles del producto

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 Supply voltage (min) (V) 1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 105
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 Supply voltage (min) (V) 1 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 105
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • 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 VCC ≥ 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 VCC ≥ 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 VCC 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 VCC 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 VCC 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 VCC 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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Documentación técnica

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Tipo Título Fecha
* Data sheet LM809/LM810 3-Pin Microprocessor Reset Circuits datasheet (Rev. E) PDF | HTML 20 abr 2016
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 feb 2020
Technical article Using low-Iq voltage supervisors to extend battery life in handheld electronics PDF | HTML 27 sep 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Technical article Selecting voltage detectors, supervisors, and reset ICs for system safety: part 1 PDF | HTML 17 oct 2016
EVM User's guide TLV8xxxEVM-019 Evaluation Modules User's Guide 08 abr 2011

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Modelo de simulación

LM809_2P45 PSpice Transient Model

SNVMA43.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_2P45 Unencrypted PSpice Transient Model

SNVMA42.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_2P63 PSpice Transient Model

SNVMA40.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_2P63 Unencrypted PSpice Transient Model

SNVMA41.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_2P93 PSpice Transient Model

SNVMA38.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_2P93 Unencrypted PSpice Transient Model

SNVMA39.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_3P08 PSpice Transient Model

SNVMA35.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_3P08 Unencrypted PSpice Transient Model

SNVMA34.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_4P0 PSpice Transient Model

SNVMA44.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_4P0 Unencrypted PSpice Transient Model

SNVMA45.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_4P38 PSpice Transient Model

SNVMA36.ZIP (43 KB) - PSpice Model
Modelo de simulación

LM809_4P38 Unencrypted PSpice Transient Model

SNVMA37.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM809_4P63 PSpice Transient Model

SNVMA33.ZIP (41 KB) - PSpice Model
Modelo de simulación

LM809_4P63 Unencrypted PSpice Transient Model

SNVMA32.ZIP (2 KB) - PSpice Model
Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBZ) 3 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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