Texas Instruments
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TPS389050GQDSERQ1
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TPS389050GQDSERQ1

Product Category

The TPS389050GQDSERQ1 belongs to the category of voltage supervisors.

Basic Information Overview

  • Use: The TPS389050GQDSERQ1 is used for monitoring and resetting microcontroller systems.
  • Characteristics: It features a precision voltage monitor with a fixed threshold and an integrated watchdog timer.
  • Package: The TPS389050GQDSERQ1 comes in a small, leadless package, making it suitable for space-constrained applications.
  • Essence: Its essence lies in providing reliable voltage monitoring and reset functions for microcontroller-based systems.
  • Packaging/Quantity: It is available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

  • Voltage Threshold: Fixed at 5.0V
  • Watchdog Timer: Programmable from 6.3ms to 25.5s
  • Operating Temperature Range: -40°C to 125°C
  • Supply Voltage Range: 1.4V to 6.5V
  • Quiescent Current: 6µA (typical)

Detailed Pin Configuration

The TPS389050GQDSERQ1 has a total of 6 pins: 1. VDD: Supply voltage input 2. GND: Ground connection 3. MR: Manual reset input 4. RESET: Active-low reset output 5. WDI: Watchdog input 6. CT: Watchdog timeout selection

Functional Features

  • Voltage Monitoring: Monitors the supply voltage and asserts a reset signal if the voltage falls below the threshold.
  • Watchdog Timer: Provides supervision of the microcontroller by requiring periodic toggling of the WDI pin to prevent code execution lockup.
  • Manual Reset Input: Allows for external initiation of a system reset.

Advantages and Disadvantages

  • Advantages:
    • Small form factor
    • Low quiescent current
    • Wide operating temperature range
  • Disadvantages:
    • Fixed voltage threshold may not be suitable for all applications
    • Limited programmability of the watchdog timer

Working Principles

The TPS389050GQDSERQ1 continuously monitors the supply voltage and the watchdog input. If the supply voltage drops below the fixed threshold or the watchdog input is not toggled within the programmed timeout period, the device asserts a reset signal to the microcontroller, initiating a system reset.

Detailed Application Field Plans

The TPS389050GQDSERQ1 is well-suited for various applications including: - Automotive electronics - Industrial control systems - Consumer electronics - Battery-powered devices

Detailed and Complete Alternative Models

Some alternative models to the TPS389050GQDSERQ1 include: - TPS3808G01 - MAX809 - ADM803

This concludes the entry for the TPS389050GQDSERQ1, covering its product category, basic information overview, specifications, pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací TPS389050GQDSERQ1 v technických řešeních

  1. What is the TPS389050GQDSERQ1?

    • The TPS389050GQDSERQ1 is a voltage supervisor and reset IC designed to monitor the power supply voltage of a system and assert a reset signal if the voltage falls below a predefined threshold.

  2. What are the key features of the TPS389050GQDSERQ1?

    • The TPS389050GQDSERQ1 features a wide input voltage range, low quiescent current, adjustable reset threshold, and various reset delay options, making it suitable for a wide range of applications.

  3. How do I set the reset threshold for the TPS389050GQDSERQ1?

    • The reset threshold can be set using an external resistor divider network connected to the VITP pin of the TPS389050GQDSERQ1.

  4. What is the typical application of the TPS389050GQDSERQ1?

    • The TPS389050GQDSERQ1 is commonly used in microcontroller-based systems, automotive electronics, industrial control systems, and other applications where reliable power supply monitoring is critical.

  5. How does the TPS389050GQDSERQ1 help improve system reliability?

    • By continuously monitoring the power supply voltage and asserting a reset signal when necessary, the TPS389050GQDSERQ1 helps prevent system malfunctions and data corruption due to unstable power conditions.

  6. Can the TPS389050GQDSERQ1 be used in automotive applications?

    • Yes, the TPS389050GQDSERQ1 is AEC-Q100 qualified and suitable for use in automotive electronics, providing robust voltage monitoring and reset functionality.

  7. What are the available reset delay options for the TPS389050GQDSERQ1?

    • The TPS389050GQDSERQ1 offers fixed reset delay options as well as a programmable delay feature, allowing flexibility in tailoring the reset timing to specific system requirements.

  8. Is the TPS389050GQDSERQ1 suitable for battery-powered applications?

    • Yes, the TPS389050GQDSERQ1's low quiescent current and wide input voltage range make it well-suited for battery-powered applications, helping to maximize battery life and system reliability.

  9. What are the recommended decoupling and bypassing guidelines for the TPS389050GQDSERQ1?

    • It is recommended to place a 0.1μF ceramic capacitor close to the VDD pin and a larger electrolytic capacitor at the input power supply to ensure stable operation and noise immunity.

  10. Where can I find detailed application notes and design resources for the TPS389050GQDSERQ1?

    • Detailed application notes, datasheets, and design resources for the TPS389050GQDSERQ1 can be found on the manufacturer's website or through authorized distributors.