AVRH10C221KT1R5YA8: A Comprehensive Guide for 2.5V, 100mA, Linear Voltage Regulator

Introduction

The AVRH10C221KT1R5YA8 is a high-performance, low-dropout (LDO) linear voltage regulator from Microchip Technology. It offers a stable output voltage of 1.5V with a maximum output current of 100mA. This article provides an in-depth overview of the AVRH10C221KT1R5YA8, covering its key features, applications, and evaluation.

Key Features

• Low Dropout Voltage: The AVRH10C221KT1R5YA8 maintains a very low dropout voltage, ensuring efficient operation even at low input voltages. This makes it suitable for applications where the input voltage is close to the output voltage.
• High Output Current: With a maximum output current of 100mA, the AVRH10C221KT1R5YA8 can power a wide range of loads, including microcontrollers, sensors, and LEDs.
• Low Quiescent Current: The AVRH10C221KT1R5YA8 consumes only 150uA of quiescent current, making it ideal for battery-powered applications.
• Adjustable Output Voltage: The output voltage of the AVRH10C221KT1R5YA8 can be adjusted to a fixed voltage between 1.2V and 5.0V using external resistors.
• Thermal Protection: The AVRH10C221KT1R5YA8 features built-in thermal protection circuitry to prevent damage in the event of excessive heating.

Applications

The AVRH10C221KT1R5YA8 is suitable for a wide range of applications, including:

• Battery-powered devices: The low quiescent current and low dropout voltage make the AVRH10C221KT1R5YA8 ideal for powering battery-operated devices such as wireless sensors and portable electronics.
• Microcontroller power: The AVRH10C221KT1R5YA8 can be used to provide a stable power supply for microcontrollers and other digital circuits.
• LED drivers: The adjustable output voltage and high output current capability make the AVRH10C221KT1R5YA8 well-suited for driving high-power LEDs.

Evaluation

The Microchip Technology EV2301 Evaluation Board provides a convenient way to evaluate the AVRH10C221KT1R5YA8. The board includes all necessary circuitry to power and test the regulator, including adjustable output voltage and load current measurement capabilities.

Tables

Table 1: Key Specifications of the AVRH10C221KT1R5YA8

Table 2: Comparison with Other LDO Regulators

Table 3: Applications for the AVRH10C221KT1R5YA8

Table 4: Tips and Tricks for Using the AVRH10C221KT1R5YA8

• Use a ceramic capacitor on the output for stability.
• Place the input and output capacitors as close to the regulator as possible.
• Consider using a heatsink if the regulator is dissipating significant power.

Frequently Asked Questions

• What is the quiescent current of the AVRH10C221KT1R5YA8?
  • 150uA
• What is the maximum output current of the AVRH10C221KT1R5YA8?
  • 100mA
• What is the dropout voltage of the AVRH10C221KT1R5YA8?
  • 80mV (at 100mA)

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