Microsemi Corporation
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LE88221DLCT
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LE88221DLCT

Product Overview

  • Category: Integrated Circuit
  • Use: Power Management
  • Characteristics: High Efficiency, Low Power Consumption
  • Package: DFN-8 (Dual Flat No-Lead)
  • Essence: Power Management IC for Low Voltage Applications
  • Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.6V to VIN
  • Maximum Output Current: 1.5A
  • Quiescent Current: 30µA
  • Switching Frequency: 2MHz
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LE88221DLCT has the following pin configuration:

  1. VIN: Input Voltage
  2. GND: Ground
  3. EN: Enable Pin
  4. FB: Feedback Pin
  5. SW: Switching Node
  6. PG: Power Good Indicator
  7. VOUT: Output Voltage
  8. SS: Soft-Start Pin

Functional Features

  • High Efficiency Power Conversion
  • Low Dropout Voltage
  • Overcurrent Protection
  • Thermal Shutdown Protection
  • Power Good Indicator
  • Soft-Start Functionality

Advantages and Disadvantages

Advantages

  • High efficiency power conversion
  • Wide input voltage range
  • Low quiescent current
  • Small package size
  • Power good indicator for system monitoring

Disadvantages

  • Limited maximum output current (1.5A)
  • Requires external components for operation

Working Principles

The LE88221DLCT is a step-down DC-DC converter that converts a higher input voltage to a lower output voltage with high efficiency. It utilizes a synchronous rectification topology to minimize power losses and maximize efficiency. The device operates by switching the input voltage on and off at a high frequency, which is then filtered and regulated to provide a stable output voltage.

Detailed Application Field Plans

The LE88221DLCT is commonly used in various low voltage applications where efficient power management is required. Some of the typical application fields include:

  1. Battery-powered devices
  2. Portable electronics
  3. IoT (Internet of Things) devices
  4. Wearable devices
  5. Embedded systems

Detailed and Complete Alternative Models

  • LM2596S-ADJ: Adjustable Step-Down DC-DC Converter
  • TPS54331: 3A, 28V Input, Step-Down DC-DC Converter
  • LT1763: Low Dropout Linear Regulator
  • MP2307: 3A, 23V, 340kHz Synchronous Rectified Step-Down Converter

These alternative models offer similar functionality and can be considered as alternatives to the LE88221DLCT based on specific requirements and design constraints.

In conclusion, the LE88221DLCT is a power management IC designed for low voltage applications. It offers high efficiency, low power consumption, and various protection features. With its small package size and wide input voltage range, it is suitable for battery-powered devices, portable electronics, IoT devices, wearable devices, and embedded systems.

10 domande e risposte comuni relative all'applicazione di LE88221DLCT nelle soluzioni tecniche

  1. What is LE88221DLCT?
    LE88221DLCT is a high-performance, low-power, dual-channel transceiver designed for use in industrial and automotive applications.

  2. What are the key features of LE88221DLCT?
    The key features of LE88221DLCT include dual-channel operation, low power consumption, high data rate capability, and robust performance in harsh environments.

  3. How does LE88221DLCT support industrial applications?
    LE88221DLCT supports industrial applications by providing reliable communication in noisy and demanding industrial environments, making it suitable for use in factory automation, process control, and industrial networking.

  4. Can LE88221DLCT be used in automotive systems?
    Yes, LE88221DLCT is designed to meet the requirements of automotive applications, offering robust communication for in-vehicle networking, telematics, and other automotive systems.

  5. What is the operating voltage range of LE88221DLCT?
    LE88221DLCT operates within a wide voltage range, typically from 3.3V to 5.5V, making it compatible with various power supply configurations.

  6. Does LE88221DLCT support multiple communication protocols?
    Yes, LE88221DLCT supports multiple communication protocols, including CAN FD, CAN 2.0B, and CAN Flexible Data Rate (CAN FD), making it versatile for different system requirements.

  7. Is LE88221DLCT compliant with industry standards?
    LE88221DLCT is compliant with ISO 11898-2 and ISO 11898-5 standards for CAN FD, ensuring interoperability and compatibility with existing systems.

  8. What are the typical applications of LE88221DLCT in technical solutions?
    Typical applications of LE88221DLCT in technical solutions include industrial automation, motor control, vehicle diagnostics, and smart grid communication.

  9. How does LE88221DLCT address electromagnetic interference (EMI) concerns?
    LE88221DLCT incorporates advanced EMI filtering and protection mechanisms to mitigate the effects of electromagnetic interference, ensuring reliable operation in challenging electromagnetic environments.

  10. Where can I find detailed technical information about LE88221DLCT?
    Detailed technical information about LE88221DLCT, including datasheets, application notes, and reference designs, can be found on the manufacturer's website or through authorized distributors.