Linear Technology/QD Devices
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LTC2919HMS-3.3#PBF
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LTC2919HMS-3.3#PBF

Product Overview

Category

The LTC2919HMS-3.3#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the family of voltage supervisors.

Use

This product is primarily used for monitoring and supervising the voltage levels in electronic systems, ensuring proper functionality and preventing damage due to voltage fluctuations.

Characteristics

  • Voltage Range: The LTC2919HMS-3.3#PBF operates within a voltage range of 2.7V to 5.5V.
  • Output Type: It provides an active low, open-drain output.
  • Adjustable Threshold: The voltage threshold can be adjusted using external resistors.
  • Low Quiescent Current: The device consumes minimal current during operation, making it suitable for battery-powered applications.
  • Wide Temperature Range: It can operate reliably across a temperature range of -40°C to 125°C.

Package

The LTC2919HMS-3.3#PBF is available in a small surface-mount package known as MSOP-10.

Essence

The essence of this product lies in its ability to monitor voltage levels and provide a reliable output signal to indicate when the voltage exceeds or falls below a predetermined threshold.

Packaging/Quantity

The LTC2919HMS-3.3#PBF is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Threshold Voltage Range: Adjustable through external resistors
  • Quiescent Current: Typically 20µA
  • Operating Temperature Range: -40°C to 125°C
  • Output Type: Active Low, Open-Drain
  • Package Type: MSOP-10

Detailed Pin Configuration

The LTC2919HMS-3.3#PBF features the following pin configuration:

  1. GND (Ground)
  2. IN (Voltage Input)
  3. TH (Threshold Adjust)
  4. VCC (Supply Voltage)
  5. GND (Ground)
  6. GND (Ground)
  7. GND (Ground)
  8. GND (Ground)
  9. GND (Ground)
  10. OUT (Output)

Functional Features

  • Voltage Monitoring: The LTC2919HMS-3.3#PBF continuously monitors the input voltage and compares it to the threshold voltage.
  • Threshold Adjustment: The threshold voltage can be adjusted using external resistors, allowing customization for different applications.
  • Open-Drain Output: The device provides an active low, open-drain output that can be easily interfaced with other digital circuits.
  • Hysteresis: It incorporates hysteresis to prevent oscillation near the threshold voltage, ensuring stable operation.

Advantages and Disadvantages

Advantages

  • Wide operating voltage range allows compatibility with various systems.
  • Adjustable threshold voltage enables flexibility in different applications.
  • Low quiescent current consumption makes it suitable for battery-powered devices.
  • Small package size saves board space and facilitates compact designs.
  • Reliable performance across a wide temperature range ensures versatility.

Disadvantages

  • Lack of built-in overvoltage/undervoltage protection features.
  • Limited number of pins may restrict additional functionalities without external circuitry.

Working Principles

The LTC2919HMS-3.3#PBF operates by comparing the input voltage (IN) with the threshold voltage (TH). When the input voltage exceeds the threshold, the output (OUT) is pulled low. Conversely, when the input voltage falls below the threshold, the output remains high impedance. The threshold voltage can be adjusted using external resistors connected to the TH pin.

Detailed Application Field Plans

The LTC2919HMS-3.3#PBF finds applications in various fields, including:

  1. Power Supply Monitoring: It can be used to monitor the input voltage of power supplies and trigger appropriate actions in case of overvoltage or undervoltage conditions.
  2. Battery-Powered Systems: The low quiescent current consumption makes it suitable for battery-powered devices, ensuring efficient power management.
  3. Industrial Control Systems: It can be employed in industrial control systems to monitor critical voltages and prevent damage to sensitive components.
  4. Automotive Electronics: The wide temperature range and adjustable threshold make it suitable for automotive applications, such as monitoring vehicle battery voltage.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC2919HMS-3.3#PBF include:

  1. MAX823: Voltage Supervisor IC with Adjustable Threshold
  2. ADM1175: Precision Voltage Monitor with Programmable Threshold
  3. TPS3839: Ultra-Low Quiescent Current Voltage Supervisor

These alternative models

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق LTC2919HMS-3.3#PBF في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of LTC2919HMS-3.3#PBF in technical solutions:

  1. Q: What is the LTC2919HMS-3.3#PBF? A: The LTC2919HMS-3.3#PBF is a voltage supervisor and monitor IC manufactured by Linear Technology (now part of Analog Devices). It is designed to monitor multiple power supply voltages and provide various outputs based on their status.

  2. Q: What are the key features of the LTC2919HMS-3.3#PBF? A: The key features of this IC include undervoltage and overvoltage monitoring, adjustable thresholds, programmable delay times, power-on reset generation, and fault detection.

  3. Q: How can I use the LTC2919HMS-3.3#PBF in my circuit? A: The LTC2919HMS-3.3#PBF can be used as a supervisory circuit to monitor power supply voltages and generate appropriate signals or actions based on their status. It can be connected to the power supply rails and other components as per the datasheet guidelines.

  4. Q: Can the LTC2919HMS-3.3#PBF be used with different power supply voltages? A: Yes, the LTC2919HMS-3.3#PBF can be used with a wide range of power supply voltages. It has an operating voltage range of 2.7V to 6V.

  5. Q: How many power supply inputs can the LTC2919HMS-3.3#PBF monitor? A: The LTC2919HMS-3.3#PBF can monitor up to 8 power supply inputs simultaneously.

  6. Q: Can I adjust the undervoltage and overvoltage thresholds of the LTC2919HMS-3.3#PBF? A: Yes, the undervoltage and overvoltage thresholds of the LTC2919HMS-3.3#PBF can be adjusted using external resistors connected to its threshold pins.

  7. Q: What is the purpose of the programmable delay feature in the LTC2919HMS-3.3#PBF? A: The programmable delay feature allows you to set a time delay before generating an output signal based on the power supply status. This can be useful for avoiding false alarms or allowing time for stabilization.

  8. Q: Can the LTC2919HMS-3.3#PBF generate a power-on reset signal? A: Yes, the LTC2919HMS-3.3#PBF has a power-on reset output that can be used to initiate a system reset when the power supply voltage reaches a stable level.

  9. Q: How does the fault detection feature of the LTC2919HMS-3.3#PBF work? A: The fault detection feature monitors the power supply inputs for faults such as overvoltage or undervoltage conditions. When a fault is detected, the corresponding fault output pin is activated.

  10. Q: Are there any application examples or reference designs available for the LTC2919HMS-3.3#PBF? A: Yes, the datasheet of the LTC2919HMS-3.3#PBF provides application examples and reference designs that can help you understand how to use this IC in various technical solutions.

Please note that these answers are general and it's always recommended to refer to the datasheet and consult with the manufacturer for specific details and guidelines related to your application.