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LTC2922IF-3.3#PBF
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LTC2922IF-3.3#PBF

Product Overview

Category

The LTC2922IF-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 controlling the voltage levels in electronic systems, ensuring proper operation and preventing damage due to overvoltage or undervoltage conditions.

Characteristics

  • Voltage supervisor with adjustable threshold
  • Low quiescent current consumption
  • Wide operating voltage range
  • High accuracy and precision
  • Small form factor
  • RoHS compliant

Package

The LTC2922IF-3.3#PBF is available in a compact 8-pin DFN (Dual Flat No-Lead) package, which provides excellent thermal performance and ease of integration into various circuit designs.

Essence

The essence of the LTC2922IF-3.3#PBF lies in its ability to monitor and regulate voltage levels, ensuring the stability and reliability of electronic systems.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

  • Supply Voltage Range: 1.6V to 5.5V
  • Adjustable Threshold Voltage Range: 0.4V to 5V
  • Quiescent Current: 10µA (typical)
  • Operating Temperature Range: -40°C to 85°C
  • Output Type: Active Low
  • Power-On Reset Delay: 200ms (typical)

Detailed Pin Configuration

The LTC2922IF-3.3#PBF features the following pin configuration:

  1. GND: Ground connection
  2. VCC: Positive supply voltage input
  3. TH: Threshold voltage adjustment pin
  4. RESET: Active low reset output
  5. MR: Manual reset input
  6. GATE: Gate control input
  7. VCC2: Secondary supply voltage input
  8. NC: No connection

Functional Features

  • Voltage monitoring and supervision
  • Adjustable threshold voltage for flexibility
  • Power-on reset generation
  • Manual reset capability
  • Gate control for power sequencing
  • Dual supply voltage support

Advantages and Disadvantages

Advantages

  • Wide operating voltage range allows compatibility with various systems
  • Adjustable threshold voltage provides customization options
  • Low quiescent current consumption minimizes power consumption
  • Small form factor enables space-efficient designs
  • RoHS compliance ensures environmental friendliness

Disadvantages

  • Limited pin configuration may restrict certain applications
  • Lack of built-in protection features against transient voltage events

Working Principles

The LTC2922IF-3.3#PBF operates by continuously monitoring the input voltage and comparing it to the adjustable threshold voltage set by the TH pin. If the input voltage falls below the threshold, the RESET pin is asserted low, indicating an undervoltage condition. Conversely, if the input voltage rises above the threshold, the RESET pin remains high, indicating a normal operating voltage.

The device also incorporates power-on reset functionality, generating a reset pulse upon power-up to ensure a controlled start-up sequence. Additionally, the MR pin allows for manual resetting of the device when required.

The GATE pin provides gate control, allowing for proper power sequencing in multi-voltage systems. This feature prevents potential damage or improper operation due to incorrect power-up or power-down sequences.

Detailed Application Field Plans

The LTC2922IF-3.3#PBF finds extensive application in various electronic systems where voltage monitoring and regulation are critical. Some specific application fields include:

  1. Battery-powered devices: Ensuring proper battery voltage levels to prevent over-discharge or damage.
  2. Industrial automation: Monitoring power supply voltages to prevent equipment malfunction or damage.
  3. Automotive electronics: Protecting sensitive electronic components from voltage fluctuations in automotive systems.
  4. Telecommunications: Ensuring stable voltage levels for reliable operation of communication equipment.
  5. Consumer electronics: Preventing damage to devices due to voltage spikes or drops.

Detailed and Complete Alternative Models

  1. LTC2922IF-2.5#PBF: Similar to LTC2922IF-3.3#PBF, but with an adjustable threshold voltage range of 0.4V to 2.5V.
  2. LTC2922IF-5#PBF: Similar to LTC2922IF-3.3#PBF, but with an adjustable threshold voltage range of 0.4V to 5V.
  3. LTC2922IF-ADJ#PBF: Similar to LTC2922IF-3.3#PBF, but with an adjustable threshold voltage range of 0.4V to a user-defined maximum voltage.

These alternative models provide flexibility in selecting the appropriate threshold voltage range based on specific application requirements.

In conclusion, the

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von LTC2922IF-3.3#PBF in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of LTC2922IF-3.3#PBF in technical solutions:

  1. Q: What is the LTC2922IF-3.3#PBF? A: The LTC2922IF-3.3#PBF is a low voltage, dual supply monitor and power switch IC.

  2. Q: What are the typical applications of LTC2922IF-3.3#PBF? A: It is commonly used in battery-powered systems, portable devices, and other applications where monitoring and controlling multiple power supplies is required.

  3. Q: What is the operating voltage range of LTC2922IF-3.3#PBF? A: The operating voltage range is from 1.6V to 5.5V.

  4. Q: How many power supplies can be monitored and controlled using LTC2922IF-3.3#PBF? A: It can monitor and control two independent power supplies.

  5. Q: Can LTC2922IF-3.3#PBF handle overvoltage protection? A: Yes, it has built-in overvoltage protection for each power supply.

  6. Q: Does LTC2922IF-3.3#PBF provide undervoltage lockout (UVLO) functionality? A: Yes, it provides UVLO functionality to ensure proper operation of the power supplies.

  7. Q: What is the maximum current rating of the power switches in LTC2922IF-3.3#PBF? A: The power switches can handle a maximum current of 500mA.

  8. Q: Can LTC2922IF-3.3#PBF be used in both active-high and active-low configurations? A: Yes, it supports both active-high and active-low configurations for power supply monitoring.

  9. Q: Does LTC2922IF-3.3#PBF have thermal shutdown protection? A: Yes, it has built-in thermal shutdown protection to prevent overheating.

  10. Q: What package does LTC2922IF-3.3#PBF come in? A: It comes in a 16-pin TSSOP package.

Please note that these answers are general and may vary depending on the specific application and requirements.