Allegro MicroSystems, LLC
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A1221ELHLT-T
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A1221ELHLT-T Product Overview

Introduction

The A1221ELHLT-T is a versatile electronic component that belongs to the category of voltage regulators. This product is widely used in various electronic devices and systems to regulate voltage levels and ensure stable operation.

Basic Information Overview

  • Category: Voltage Regulator
  • Use: Regulating voltage levels in electronic devices and systems
  • Characteristics: High precision, low dropout voltage, thermal shutdown protection
  • Package: TO-252-3 (DPAK)
  • Essence: Ensuring stable voltage supply for electronic components
  • Packaging/Quantity: Available in reels with varying quantities

Specifications

  • Input Voltage Range: 4V to 26V
  • Output Voltage Range: 1.25V to 20V
  • Output Current: Up to 1.5A
  • Dropout Voltage: 0.6V at 1A
  • Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

  1. VIN: Input Voltage
  2. GND: Ground
  3. VOUT: Output Voltage

Functional Features

  • High Precision: Provides accurate and stable output voltage
  • Low Dropout Voltage: Ensures efficient operation even with small voltage differentials
  • Thermal Shutdown Protection: Safeguards the regulator from overheating

Advantages and Disadvantages

Advantages

  • Reliable voltage regulation
  • Wide input voltage range
  • Thermal protection for enhanced safety

Disadvantages

  • Limited maximum output current compared to higher-rated regulators
  • Requires heat sinking for high-power applications

Working Principles

The A1221ELHLT-T operates by comparing the output voltage to a reference voltage and adjusting the pass element to maintain a constant output voltage. It utilizes feedback control to achieve precise regulation and incorporates thermal protection to prevent damage from excessive heat.

Detailed Application Field Plans

The A1221ELHLT-T is commonly used in: - Battery-powered devices - Portable electronics - Automotive applications - Industrial control systems

Detailed and Complete Alternative Models

  • A1221ELHDT-T: Higher output current version
  • A1221ELHCT-T: Lower dropout voltage variant
  • A1221ELHST-T: Enhanced thermal performance model

In conclusion, the A1221ELHLT-T is a reliable voltage regulator with a wide range of applications, offering precise regulation and essential protection features.

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10个与A1221ELHLT-T在技术解决方案中的应用相关的常见问题及解答

  1. What is the A1221ELHLT-T?

    • The A1221ELHLT-T is a high-performance, low-dropout (LDO) voltage regulator designed for use in various technical solutions.

  2. What is the input voltage range of the A1221ELHLT-T?

    • The A1221ELHLT-T has an input voltage range of 2.5V to 5.5V, making it suitable for a wide range of applications.

  3. What is the output voltage range of the A1221ELHLT-T?

    • The A1221ELHLT-T provides a fixed output voltage of 1.8V, which is ideal for powering sensitive electronic components.

  4. What is the maximum output current of the A1221ELHLT-T?

    • The A1221ELHLT-T can deliver a maximum output current of 150mA, making it suitable for powering small to medium-sized loads.

  5. What are the key features of the A1221ELHLT-T?

    • The A1221ELHLT-T features low dropout voltage, low quiescent current, thermal shutdown protection, and excellent line and load transient response.

  6. What are the typical applications of the A1221ELHLT-T?

    • The A1221ELHLT-T is commonly used in battery-powered devices, portable electronics, industrial equipment, and other applications requiring stable and reliable power regulation.

  7. What is the thermal resistance of the A1221ELHLT-T?

    • The A1221ELHLT-T has a low thermal resistance of 100°C/W, ensuring efficient heat dissipation in various operating conditions.

  8. Is the A1221ELHLT-T available in a surface-mount package?

    • Yes, the A1221ELHLT-T is available in a compact and space-saving SOT-23 package, making it suitable for modern PCB designs.

  9. Does the A1221ELHLT-T require any external components for operation?

    • The A1221ELHLT-T requires only a few external components, such as input and output capacitors, to operate effectively.

  10. Is the A1221ELHLT-T RoHS compliant?

    • Yes, the A1221ELHLT-T is RoHS compliant, meeting environmental standards for lead-free and hazardous substance-free manufacturing.