Inicio Gestión de la energía Supervisor & reset ICs

TLC7705M

ACTIVO

SVS de potencia única (5 V) con retardo de tiempo programable y salidas de inserción y extracción

Detalles del producto

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 4.55 Features Complimentary output, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1.8 Iq (typ) (mA) 0.009 Output driver type/reset output Active-high, Active-low, Push-Pull Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Rating Military Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 4.55 Features Complimentary output, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1.8 Iq (typ) (mA) 0.009 Output driver type/reset output Active-high, Active-low, Push-Pull Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Rating Military Watchdog timer WDI (s) None Operating temperature range (°C) -55 to 125
CDIP (JG) 8 64.032 mm² 9.6 x 6.67 CFP (U) 10 139.36 mm² 21.44 x 6.5 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • Power-On Reset Generator
  • Automatic Reset Generation After Voltage Drop
  • Precision Voltage Sensor
  • Temperature-Compensated Voltage Reference
  • Programmable Delay Time by External Capacitor
  • Supply Voltage Range . . . 2 V to 6 V
  • Defined RESET Output from VDD ≥ 1 V
  • Power-Down Control Support for Static RAM With Battery Backup
  • Maximum Supply Current of 16 µA
  • Power Saving Totem-Pole Outputs
  • Temperature Range . . . Up to –55°C to 125°C
  • Power-On Reset Generator
  • Automatic Reset Generation After Voltage Drop
  • Precision Voltage Sensor
  • Temperature-Compensated Voltage Reference
  • Programmable Delay Time by External Capacitor
  • Supply Voltage Range . . . 2 V to 6 V
  • Defined RESET Output from VDD ≥ 1 V
  • Power-Down Control Support for Static RAM With Battery Backup
  • Maximum Supply Current of 16 µA
  • Power Saving Totem-Pole Outputs
  • Temperature Range . . . Up to –55°C to 125°C

The TLC77xx family of micropower supply voltage supervisors provide reset control, primarily in microcomputer and microprocessor systems.

During power-on, RESET is asserted when VDD reaches 1 V. After minimum VDD (≥ 2 V) is established, the circuit monitors SENSE voltage and keeps the reset outputs active as long as SENSE voltage (VI(SENSE)) remains below the threshold voltage. An internal timer delays return of the output to the inactive state to ensure proper system reset. The delay time, td, is determined by an external capacitor:

td = 2.1 × 104 × CT

Where

CT is in farads
td is in seconds

Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed sense threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay time, td, has expired.

In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor contains additional logic intended for control of static memories with battery backup during power failure. By driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL driven by the memory bank select signal (CSH1) of the microprocessor, the memory circuit is automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the battery.)

The TLC77xxI is characterized for operation over a temperature range of –40°C to 85°C; the TLC77xxQ is characterized for operation over a temperature range of –40°C to 125°C; and the TLC77xxM is characterized for operation over the full Military temperature range of –55°C to 125°C.

The 3×3 mm DRB package is also available as a non-magnetic package for medical imaging application.

The TLC77xx family of micropower supply voltage supervisors provide reset control, primarily in microcomputer and microprocessor systems.

During power-on, RESET is asserted when VDD reaches 1 V. After minimum VDD (≥ 2 V) is established, the circuit monitors SENSE voltage and keeps the reset outputs active as long as SENSE voltage (VI(SENSE)) remains below the threshold voltage. An internal timer delays return of the output to the inactive state to ensure proper system reset. The delay time, td, is determined by an external capacitor:

td = 2.1 × 104 × CT

Where

CT is in farads
td is in seconds

Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed sense threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay time, td, has expired.

In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor contains additional logic intended for control of static memories with battery backup during power failure. By driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL driven by the memory bank select signal (CSH1) of the microprocessor, the memory circuit is automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the battery.)

The TLC77xxI is characterized for operation over a temperature range of –40°C to 85°C; the TLC77xxQ is characterized for operation over a temperature range of –40°C to 125°C; and the TLC77xxM is characterized for operation over the full Military temperature range of –55°C to 125°C.

The 3×3 mm DRB package is also available as a non-magnetic package for medical imaging application.

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Documentación técnica

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Tipo Título Fecha
* Data sheet MicroPower Supply Voltage Supervisors. datasheet (Rev. M) 19 mar 2012
* SMD TLC7705M SMD 5962-97513 21 jun 2016
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019
Application note Reset Circuit for the TMS320C6000 DSP (Rev. A) 10 jun 1999
More literature TLC7705M/5962-9751301QxA, TLC7733M/5962-9750901QxA 01 abr 1997
Application note TLC770x Series of BiCMOS Supply Voltage Supervisors 01 ene 1995

Diseño y desarrollo

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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
CDIP (JG) 8 Ultra Librarian
CFP (U) 10 Ultra Librarian
LCCC (FK) 20 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

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