Inicio Gestión de la energía Supervisor & reset ICs

TPS3838-Q1

ACTIVO

Supervisores automotrices de nanopotencia, activo-bajo, con drenaje abierto y reinicio manual

Detalles del producto

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93 Features Manual reset capable Reset threshold accuracy (%) 2.9 Iq (typ) (mA) 0.00022 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 1.6 Supply voltage (max) (V) 6 Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.93 Features Manual reset capable Reset threshold accuracy (%) 2.9 Iq (typ) (mA) 0.00022 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 1.6 Supply voltage (max) (V) 6 Rating Automotive Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Qualified for Automotive Applications
  • Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • Supply Current of 220 nA (Typ)
  • Precision Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3.0 V, 3.3 V
  • Power-On Reset Generator With Selectable Delay Time of 10 ms or 200 ms
  • Push/Pull RESET Output (TPS3836), RESET Output (TPS3837), or Open-Drain RESET Output (TPS3838)
  • Manual Reset
  • 5-Pin SOT-23 Package
  • Temperature Range –40°C to 125°C
  • Applications Include
    • Applications Using Automotive Low-Power DSPs, Microcontrollers, or Microprocessors
    • Battery-Powered Equipment
    • Intelligent Instruments
    • Wireless Communication Systems
    • Automotive Systems

  • Qualified for Automotive Applications
  • Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • Supply Current of 220 nA (Typ)
  • Precision Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3.0 V, 3.3 V
  • Power-On Reset Generator With Selectable Delay Time of 10 ms or 200 ms
  • Push/Pull RESET Output (TPS3836), RESET Output (TPS3837), or Open-Drain RESET Output (TPS3838)
  • Manual Reset
  • 5-Pin SOT-23 Package
  • Temperature Range –40°C to 125°C
  • Applications Include
    • Applications Using Automotive Low-Power DSPs, Microcontrollers, or Microprocessors
    • Battery-Powered Equipment
    • Intelligent Instruments
    • Wireless Communication Systems
    • Automotive Systems

The TPS3836, TPS3837, TPS3838 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET output 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 starts after VDD has risen above the threshold voltage VIT.

When CT is connected to GND a fixed delay time of typical 10 ms is asserted. When connected to VDD the delay time is typically 200 ms.

When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again.

All the devices of this family have a fixed-sense threshold voltage VIT set by an internal voltage divider.

The TPS3836 has an active-low push-pull RESET output. The TPS3837 has active-high push-pull RESET, and TPS3838 integrates an active-low open-drain RESET output.

The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3 V, and 3.3 V. The circuits are available in a 5-pin SOT-23 package. The TPS3836-Q-Q1, TPS3837-Q-Q1, TPS3838-Q-Q1 families are characterized for operation over a temperature range of –40°C to 125°C.

The TPS3836, TPS3837, TPS3838 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET output 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 starts after VDD has risen above the threshold voltage VIT.

When CT is connected to GND a fixed delay time of typical 10 ms is asserted. When connected to VDD the delay time is typically 200 ms.

When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again.

All the devices of this family have a fixed-sense threshold voltage VIT set by an internal voltage divider.

The TPS3836 has an active-low push-pull RESET output. The TPS3837 has active-high push-pull RESET, and TPS3838 integrates an active-low open-drain RESET output.

The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3 V, and 3.3 V. The circuits are available in a 5-pin SOT-23 package. The TPS3836-Q-Q1, TPS3837-Q-Q1, TPS3838-Q-Q1 families are characterized for operation over a temperature range of –40°C to 125°C.

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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS383xxxx-Q1 Nanopower Supervisory Circuits datasheet (Rev. A) 19 ene 2007
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 jun 2019

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
SOT-23 (DBV) 5 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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