Linear Technology/QD Devices
Obraz może przedstawiać obraz.
Szczegóły produktu można znaleźć w specyfikacjach.
LTC2945CUD#PBF
Pokaż szczegóły Arkusze danych

LTC2945CUD#PBF

Product Overview

Category

The LTC2945CUD#PBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for power and energy monitoring applications.

Characteristics

  • The LTC2945CUD#PBF is a high-precision power and energy monitor with an I2C interface.
  • It can measure voltage, current, power, charge, and energy with excellent accuracy.
  • The device operates over a wide voltage range, making it suitable for various applications.
  • It offers a low quiescent current, ensuring minimal power consumption during operation.
  • The LTC2945CUD#PBF provides flexible configuration options through its I2C interface.

Package

The LTC2945CUD#PBF comes in a small 16-lead QFN package.

Essence

The essence of this product lies in its ability to accurately monitor power and energy consumption in a compact form factor.

Packaging/Quantity

The LTC2945CUD#PBF is typically sold in reels, with each reel containing a specific quantity of units. Please refer to the manufacturer's specifications for detailed packaging information.

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to 85°C
  • Voltage Measurement Range: 0V to 15V
  • Current Measurement Range: ±30A
  • Power Measurement Range: ±45W
  • I2C Interface: Standard-mode (100kHz) and Fast-mode (400kHz)
  • Accuracy:
    • Voltage: ±0.25%
    • Current: ±0.5%
    • Power: ±1%
    • Charge: ±1%
    • Energy: ±1%

Detailed Pin Configuration

The LTC2945CUD#PBF features a 16-lead QFN package with the following pin configuration:

  1. VIN - Input Voltage
  2. VOUT - Output Voltage
  3. GND - Ground
  4. SDA - I2C Serial Data
  5. SCL - I2C Serial Clock
  6. ALERT - Alert Output
  7. INTVCC - Internal Power Supply
  8. VCC - Power Supply
  9. VBAT - Battery Voltage
  10. ISENSE+ - Positive Current Sense
  11. ISENSE- - Negative Current Sense
  12. NC - No Connection
  13. NC - No Connection
  14. NC - No Connection
  15. NC - No Connection
  16. NC - No Connection

Functional Features

  • Accurate measurement of voltage, current, power, charge, and energy.
  • Wide operating voltage range allows for versatile applications.
  • Low quiescent current minimizes power consumption.
  • I2C interface enables easy configuration and data retrieval.
  • Alert output for triggering external events based on user-defined thresholds.

Advantages and Disadvantages

Advantages

  • High precision measurements ensure accurate monitoring of power and energy consumption.
  • Flexible configuration options through the I2C interface provide customization for specific applications.
  • Compact form factor and wide operating voltage range make it suitable for various devices and systems.
  • Low quiescent current ensures minimal power consumption during operation.

Disadvantages

  • Limited current measurement range may not be suitable for high-power applications exceeding ±30A.
  • Requires additional external components for proper operation, increasing overall system complexity.

Working Principles

The LTC2945CUD#PBF operates by measuring voltage across a shunt resistor to determine current flow. It then calculates power, charge, and energy based on these measurements. The device communicates with a microcontroller or other host device through its I2C interface, allowing for configuration and data retrieval.

Detailed Application Field Plans

The LTC2945CUD#PBF finds applications in various fields, including but not limited to:

  1. Battery-powered devices: Enables accurate monitoring of power consumption in portable electronics, ensuring efficient use of battery capacity.
  2. Energy management systems: Provides precise measurement of energy usage in residential or commercial settings, facilitating energy conservation efforts.
  3. Industrial equipment: Monitors power consumption in machinery and equipment, aiding in maintenance and optimization.
  4. Electric vehicles: Enables real-time monitoring of power and energy consumption in electric vehicle charging systems, optimizing charging efficiency.

Detailed and Complete Alternative Models

  1. LTC2946CUD#PBF: Similar to the LTC2945CUD#PBF, but with extended current measurement range up to ±60A.
  2. LTC2944CUD#PBF: Offers similar functionality to the LTC2945CUD#PBF, but with a smaller package size for space-constrained applications.
  3. LTC2943CUD#PBF: A lower-cost alternative with reduced accuracy but suitable for less demanding power monitoring applications.

Please refer to

Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem LTC2945CUD#PBF w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of LTC2945CUD#PBF in technical solutions:

  1. Q: What is LTC2945CUD#PBF? A: LTC2945CUD#PBF is a specific model number for the LTC2945, which is a high-precision power and energy monitor from Linear Technology.

  2. Q: What is the purpose of LTC2945CUD#PBF? A: The LTC2945CUD#PBF is designed to accurately measure power, charge, and energy consumption in various applications.

  3. Q: How does LTC2945CUD#PBF measure power and energy? A: The LTC2945CUD#PBF uses an integrated sense resistor to measure current and voltage, and then calculates power and energy based on these measurements.

  4. Q: What is the input voltage range for LTC2945CUD#PBF? A: The LTC2945CUD#PBF can operate with an input voltage range of 2.7V to 80V.

  5. Q: Can LTC2945CUD#PBF measure bidirectional current flow? A: Yes, the LTC2945CUD#PBF can measure both positive and negative currents, making it suitable for applications where current flows in both directions.

  6. Q: Is LTC2945CUD#PBF suitable for battery monitoring applications? A: Yes, LTC2945CUD#PBF is commonly used for battery monitoring due to its ability to accurately measure charge and energy consumption.

  7. Q: Does LTC2945CUD#PBF have any built-in communication interfaces? A: Yes, LTC2945CUD#PBF supports I2C communication, allowing for easy integration with microcontrollers or other digital systems.

  8. Q: Can LTC2945CUD#PBF measure power and energy in real-time? A: Yes, LTC2945CUD#PBF provides instantaneous measurements of power, charge, and energy, allowing for real-time monitoring.

  9. Q: What is the accuracy of LTC2945CUD#PBF? A: The LTC2945CUD#PBF has a typical accuracy of ±0.2% for voltage and current measurements, and ±1% for power and energy calculations.

  10. Q: Are there any application examples for LTC2945CUD#PBF? A: Yes, LTC2945CUD#PBF can be used in various applications such as battery-powered devices, portable instruments, solar power systems, and more.

Please note that these answers are general and may vary depending on specific implementation details and requirements.