Inicio Administración de potencia Supervisor & reset ICs Circuitos integrados de restablecimiento y vigilancia

TLV809

ACTIVO

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

Detalles del producto

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.64, 2.93, 4.55 Features Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 2, 2.2, 2.3 Iq (typ) (mA) 0.009 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.25, 2.64, 2.93, 4.55 Features Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 2, 2.2, 2.3 Iq (typ) (mA) 0.009 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 200 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
SOT-23 (DBZ) 3 6.9204 mm² (2.92 mm × 2.37 mm) SOT-23 (DBV) 3 8.12 mm² (2.9 mm × 2.8 mm)
  • Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with a fixed delay time of 200 ms
  • Supply current: 9 µA (typical)
  • Temperature range: –40°C to +85°C
  • 3-Pin SOT-23 package
  • Pin-for-pin compatible with the MAX809
  • Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with a fixed delay time of 200 ms
  • Supply current: 9 µA (typical)
  • Temperature range: –40°C to +85°C
  • 3-Pin SOT-23 package
  • Pin-for-pin compatible with the MAX809

The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems. The newer TLV809E device is a pin-to-pin compatible alternative.

During power-on, RESET is asserted when the supply voltage (VDD) becomes greater than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage, VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time (td(typ) = 200 ms) starts after VDD rises above the threshold voltage, VIT. When the supply voltage drops below the VIT threshold voltage, the output becomes active (low) again. No external components are required. All devices in this family have a fixed sense-threshold voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TLV809 devices are characterized for operation over a temperature range of –40°C to +85°C.

The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems. The newer TLV809E device is a pin-to-pin compatible alternative.

During power-on, RESET is asserted when the supply voltage (VDD) becomes greater than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage, VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time (td(typ) = 200 ms) starts after VDD rises above the threshold voltage, VIT. When the supply voltage drops below the VIT threshold voltage, the output becomes active (low) again. No external components are required. All devices in this family have a fixed sense-threshold voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TLV809 devices are characterized for operation over a temperature range of –40°C to +85°C.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TLV809 3-Pin Supply Voltage Supervisor datasheet (Rev. F) 30/12/2020
Nota sobre la aplicación Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17/03/2020
Guía de selección Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28/02/2020
Artículo técnico Using low-Iq voltage supervisors to extend battery life in handheld electronics PDF | HTML 27/09/2019
Libro electrónico Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28/06/2019
Informe de prueba TIDA-00274 Test Results 16/07/2014
Guía del usuario TIDA-00274 Sensorless 3-Phase BLDC Drive 16/07/2014

Diseño y desarrollo

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