Texas Instruments
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LM27964SQX-A/NOPB
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LM27964SQX-A/NOPB

Product Overview

Category: Voltage Regulator
Use: Power management
Characteristics: High efficiency, low quiescent current
Package: WSON-10
Essence: Efficient power regulation for various applications
Packaging/Quantity: Tape and reel, 2500 units

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Voltage Range: 0.8V to 3.3V
  • Output Current: 1A
  • Quiescent Current: 17µA
  • Efficiency: Up to 95%
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN
  2. PGND
  3. SW
  4. FB
  5. EN
  6. SS/TR
  7. AGND
  8. VOUT
  9. VOUT
  10. VOUT

Functional Features

  • Integrated synchronous buck regulator
  • Low dropout voltage
  • Adjustable soft-start
  • Overcurrent and thermal protection
  • Power good indicator

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Low quiescent current

Disadvantages: - Limited output current compared to some alternatives - Requires external compensation components

Working Principles

The LM27964SQX-A/NOPB is a synchronous buck regulator that efficiently steps down the input voltage to a lower, regulated output voltage. It uses a pulse-width modulation (PWM) control scheme to adjust the duty cycle of the internal switches, regulating the output voltage.

Detailed Application Field Plans

This voltage regulator is suitable for a wide range of applications including battery-powered devices, portable electronics, industrial sensors, and IoT devices. Its low quiescent current makes it ideal for applications requiring extended battery life.

Detailed and Complete Alternative Models

  1. LM2675
  2. LM2937
  3. LM3481
  4. LM1117

LM27964SQX-A/NOPB offers a balance of efficiency and flexibility, but for higher output currents or different package options, alternative models such as LM2675, LM2937, LM3481, and LM1117 can be considered.

In conclusion, the LM27964SQX-A/NOPB is a versatile voltage regulator suitable for various low-power applications, offering high efficiency and a wide input voltage range. While it has limitations in terms of output current and external component requirements, its performance and features make it a compelling choice for power management needs.

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10 domande e risposte comuni relative all'applicazione di LM27964SQX-A/NOPB nelle soluzioni tecniche

  1. What is the input voltage range of LM27964SQX-A/NOPB?
    - The input voltage range of LM27964SQX-A/NOPB is 2.7V to 5.5V.

  2. What is the maximum output current of LM27964SQX-A/NOPB?
    - The maximum output current of LM27964SQX-A/NOPB is 500mA.

  3. Can LM27964SQX-A/NOPB be used in battery-powered applications?
    - Yes, LM27964SQX-A/NOPB is suitable for battery-powered applications due to its low quiescent current and wide input voltage range.

  4. Does LM27964SQX-A/NOPB have built-in overcurrent protection?
    - Yes, LM27964SQX-A/NOPB features built-in overcurrent protection to safeguard the device and the load.

  5. What is the typical efficiency of LM27964SQX-A/NOPB?
    - The typical efficiency of LM27964SQX-A/NOPB is around 90% at full load.

  6. Is LM27964SQX-A/NOPB suitable for automotive applications?
    - Yes, LM27964SQX-A/NOPB is designed to meet the requirements for automotive applications, including AEC-Q100 qualification.

  7. Can LM27964SQX-A/NOPB operate in a wide temperature range?
    - Yes, LM27964SQX-A/NOPB can operate in a wide temperature range from -40°C to 125°C.

  8. What type of package does LM27964SQX-A/NOPB come in?
    - LM27964SQX-A/NOPB is available in a small 10-pin WSON package for space-constrained applications.

  9. Does LM27964SQX-A/NOPB require external compensation components?
    - No, LM27964SQX-A/NOPB has integrated compensation, eliminating the need for external compensation components.

  10. Can LM27964SQX-A/NOPB be used in portable consumer electronics?
    - Yes, LM27964SQX-A/NOPB is suitable for use in portable consumer electronics due to its low dropout voltage and small footprint.